Genius Jnr - Use the following information to answer the next question. Two plane mirrors, M1 and M2 are placed at an angle, θ with each other. A light ray is incident on M1 at an angle, as shown in the given figure. For what value of θ, will the reflected ray from M2 be always parallel to the ray incident on M1?

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Use the following information to answer the next question.

Two plane mirrors, M₁ and M₂ are placed at an angle, θ with each other. A light ray is incident on M₁ at an angle, as shown in the given figure.

For what value of θ, will the reflected ray from M₂ be always parallel to the ray incident on M₁?

or

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Test Marks Class Interval 1 10 11 20 21 30 31 40 41 50 Table Given Shows Ages 75 Teachers School Age Years 18 29 30 39 40 49 50 59 Number Teachers 3 27 37 Following Ages Years 360 Patients Getting Medical Treatment Hospital Age Years 10 20 20 30 30 40 40 Marks Obtained 90 Students School Mathematics 100 Given Marks 0 20 20 30 30 40 40 50 50 60 60 70 70 Known Box 800 Electric Bulbs Contains 36 Defective Bulbs One Bulb Taken Random Box Probability Bulb Fill Blanks Probability Impossible Event Ii Probability Sure Event Iii Let E Event P E Iv P E P E V Sample Survey 645 People Found 516 People High School Certificate Person Chosen Random Probability H Medical Examination Students Class Following Blood Groups Recorded Blood Group B Ab Number Students 80 Bulbs Selected Random Lot Lifetime Hours Recorded Lifetime Hours 300 500 700 900 1100 Frequency 1 Survey 364 Children Aged 19 36 Months Found 91 Liked Eat Potato Chips Child Selected Random Probabil Two Coins Tossed 1000 Times Outcomes Recorded Given Number Heads 2 1 0 Frequency 200 550 250 Two Coi Know Opinion Students Subject Sanskrit Survey 200 Students Conducted Data Recorded Opinion Like Disl 80 Bulbs Selected Random Lot Lifetime Hours Recorded Lifetime Hours 300 500 700 900 1100 Frequency 1 Two Coins Tossed Simultaneously 600 Times Get 2 Heads 234 Times 1 Head 206 Times 0 Head 160 Times Tw Prove Following Identities 1 16 Tan3 X1 Tan2 X Cot3 X1 Cot2 X 1 2 Sin2 X Cos2 Xsin X Cos X Solve Following System Equations R 4x 1 3 6x 1 X 0 Prove Following Identities 1 16 1 Sin2 X1 Cot X Cos2 X1 Tan X Sin X Cos X Find Domain Range Following Real Valued Functions Fx Ax Bbx Ii Fx Ax Bcx Iii Fx X 1 Iv Fx X 3 V Fx X Company Opening Credit Balance Surplus E Balance Statement Profit Loss 1 00 000 Year Earned Profit 7 Sushma Natural Blue Eyes Part Eye Gives Blue Colour Role Part Play Functioning Eye Stion Prove Following Identities 1 16 Sec4 X Sec2 X Tan4 X Tan2 X Prove Following Identities 1 16 Sin6 X Cos6 X 1 3 Sin2 X Cos2 X Braille System Enable Visually Challenged People Read Prove Following Identities 1 16 Cosec X Sin X Sec X Cos X Tan X Cot X 1 Prove Following Identities 1 16 Cosec X Sec X 1 Cot X 1 Cos X Tan X Sin X Prove Following Identities 1 16 1 Sin X Cos Xcos X Sec X Cosec X Sin2 X Cos2 Xsin3 X Cos3 X Sin X Draw Diagram Showing Image Formation Plane Mirror Kind Reflection Takes Place Surface Mirror Scrubbed Sand Paper Ambulance Always Labelled Reverse Example Phenomenon Related Reflection Prove Following Identities 1 16 Tan X1 Cot X Cot X1 Tan X Sec X Cossec X 1 Part Determines Amount Light Entering Eye Prove Following Identities 1 16 Sin3 X Cos3 Xsin X Cos X Sin3 X Cos3 Xsin X Cos X 2 Prove Following Identities 1 16 Sec X Sec Tan X Tan Y2 Sec X Tan Tan X Sec Y2 1 State Whether Following Statements True False Justify Answer Points 4 3 B 6 4 C 5 6 3 5 Vertices Par State Whether Following Statements True False Justify Answer Circle Centre Origin Point P 5 0 Lies P Magnification Produced Rear View 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Students State One Role Ciliary Muscles Human Eye List Parts Human Eye Control Amount Light Entering Explain Perform Function B Write Function Retina List Parts Human Eye Control Amount Light Entering Explain Perform Function B Write Function Retina State Function Following Parts Human Eye Cornea Ii Iris Iii Pupil Iv Retina Millions People Developi Write Function Following Parts Human Eye Cornea Iris Crystalline Lens Ciliary Muscles B Millions Pe Student Determines Focal Length Device X Focusing Image Distant Object Screen Placed 20 Cm Device Si Due Gradual Weakening Ciliary Muscles Diminishing Flexibility Eye Lens Certain Defect Vision Arises Help Ciliary Muscles Human Eye Change Curvature Thus Alter Focal Length Lens State Changes Occur Cur Write Power Accommodation Human Eye Explain Image Distance Eye Change Change Distance Object Eye Following Characteristic Image Formed Plane Mirror Following Use Plane Mirror Following Reflected Angles Cannot Produced Light Ray Incident Obliquely Plane Mirror Direction Reflected Ray Ray Light Incident Normally Plane Mirror Following Devices Use Plane Mirror Subpart List Four Characteristics Image Formed Plane Mirror Plane Mirrors Aligned Periscope Kaleidoscope Measure Exact Ph Aqueous Solution Ph Meter B Litmus Paper C Ph Paper Universal Indictor Gas Produced Reaction Base Metals Dihydrogen B Dioxygen C Carbon Dioxide Dinitrogen Three Test Tubes P Q R Iron Nails Water Oil Anhydrous Calcium Chloride Taken Among Test Tubes Test T Displacement Reaction Occur Among Following Reactions Insert Image Zn Cuso4 B Fe Cuso4 C Cu Feso4 Mg Table Properties Specimens Given Specimen Melting Point Shining Malleability Electric Conductivity P Statement Wrong Among Following Statement Statement 1 Non Metal Possess Property Ductility Malleabil Properties One Gas Given Identify Gas 1 Produced Haber Process 2 Possesses Intensive Smell Causes Ir Make Correct Pairs Mentioned X X Dehydrating Agent 1 Sulphur Dioxide Gas B Preparation Fire Crackers Water Gas Mixture Gas P Carbon Dioxide Q Hydrogen R Carbon Monoxide Q R B P Q C P R P Q R Component Obtained Refining Petroleum Used Solvent Petrochemicals Tar B Kerosene C Naphtha Petroleum Properties One Mineral Coal Given Identify Mineral Coal 1 Matured Form Mineral Coal 2 Contains 94 98 Called Fossil Fuel Mineral Coal B Petroleum C Natural Gas Given General Formula Alcohol Series Cnh2n 1 Oh Formula Alcohol Containing Four Carbon C5h11oh B C4h9oh C One Girl Student Uses Liquid Compound Remove Nail Paint Nail Liquid Compound Removes Nail Paint Nail Following Methanol Used Making Dyes Phenol Polymer B Used Raw Material Plastic Industry C Preserve R Food Take Body Travels Long Complex Path Starts Mouth Ends Anus Correct Sequence Process Food Digest Statement True Structure Human Heart Walls Atria Thin Wall Ventricles Thick B Bicuspid Valve Right A Part Body Blood Gets Purified Becomes Oxygenated Atrium B Lungs C Heart Ventricle Process Blood Filtered Bowman Capsule Reabsorption B Secretion C Ultrafiltration None Name Short Tubular Region Bowman Capsule Kidney Known Henle Loop B Proximal Tubule C Neck Distal Tub 21 Called Movement Plant Towards Gravity Chemotropism B Geotropism C Hydrotropism Phototropism Following Mis Matched Pair Insulin Pancreas B Estrogens Ovary C Adrenaline Pituitary Gland Testoster Figure Indicates Given Binary Fission Amoeba B Formation Temporary Finger Like Projection Amoeba C B Living Organism Asexual Reproduction Take Place Among Following P Amoeba Q Cladophora R Yeast Banana Process Important Production Gametes Living Organism Performing Sexual Reproduction Context Chromoso Following Chart Depicts Fertilization Male Female Sexual Production True P Q R Following Sr P Q R 1 Correct Sequence Context Least Bio Degradable Biodegradable Material Bones Plastic Paper Metal B Pap Sentence True Context House Hold Waste Management Buy Loose Fruits Vegetables Avoid Packaging B Thro Destroy Forest Actually Destroying Food Wild Life B Wild Life Habitat C Trees Environment Today Using Natural Resources Maximum Following Alternative Correctly Explain Natural Resources Reso Important Parameter Determines Functioning Nano Material Surface Area Volume Ratio Reason Small Gran Make Proper Pair Fullerene B Swnt C Mwnt Carbon 2 B 4 C 1 3 B 3 B 1 C 2 4 C 4 B 2 C 1 3 1 B 3 C 4 2 Understanding Cartesian Sign Convention Reflection Spherical Mirror Students Took Part Group Discuss Statement Wrong Following Reflection Plane Mirror Size Image Size Object B Object Distance Image Dis Coloured Light Scatters Least Fog Smoke Green B Yellow C Blue Red True Far Sightedness Hypermetropia Following Eyelense Become Thin Per Requirement B Distant Object C Specify Colour P Q Following Diagram Magenta Yellow B White Cyan C White Yellow Magenta Cyan Pair Correct Instrument Used Laboratory Uses Following Instrument Uses Voltmeter Measure Electric Po Deposit Copper Iron Spoon Copper Plate Connected Iron Spoon B Positive Terminal C Negative Terminal P Q R Conductors Following Diagram Removing Conductor Bulb Glow B R C Q P Statement True According Ohm Law Current Increase Increasing Voltage Circuit B Resistance Increase I Statement Wrong Following Earthing Wire Green Coloured B India Current Flowing Wire Ac Frequency 50h Match Following Section Section B 1 Fuse P Converts Electric Energy Mechanical Energy 2 Electric Gen Instrument Used Convert Electrical Energy Heat Energy Room Heater B Electric Iron C Electric Bell El Planets Divided Two Groups Based Characteristic Group 1 Group 2 Structure Planets Resemble Earth Str Planets Characteristics Given Option Wrong Among Earth Possesses Living Organism B Venus Bright Plan Statement Wrong Following Statement 1 Metsat Useful Weather Forecasting Statement 2 Insat Useful Dir Planet Sun Sets East Saturn B Venus C Mercury Pluto Honeybee Bites Chemical Enters Body Calcium Formate B Melittin C Formic Acid Magnesium Hydroxide One Student Examines Properties Substance Laboratory Aqueous Solution Substance Converts Blue Litmus Nano Technology Useful Energy Sector Explain 2 Nano Technology Considered Invention Modern Society U Draw Labelled Diagram Experiment Explaining Ohm Law 2 Blind Candidate Write Apparatus Experimental M Isomer Write Isomer Butane Structural Formula 2 Write Industrial Name Two Use Ethyne Write Four Points Difference Arteries Veins 2 Explain Types Waste Based Nature Degradation 2 Solar System Write Name Planets Solar System Sequence 2 Write Definition Acid Base Based Arrhenius Principle Write Limitations Principle 2 Write Properties Hormone 2 Explain Acquired Trait Examples 2 Way Analogous Organs Gives Evidence Evolution Explain Usefulness Dam Constructed River 2 Explain Total Internal Reflection Using Diagram 3 Blind Student Draw Diagram Precautions Taken Use Electricity 3 Write Six Points Write Principle Uses Electric Motor Diagram Con General Formula Alkyne Series Cnh2n B Cnh2n 2 C Cnh2n 2 Cnhn Primary State Transformation Coal Peat B Lignite C Bitumen Anthracite Explain Method Preparation Hydrogen Gas Laboratory Chemical Equation Diagram 3 Explain Cleansing Process Soap Detergent 3 Write Industrial Production Ethanol Two Uses Mineral Coal Obtained Gujarat Ankleshwar B Khambat C Thangadh Kalol Explain Processes Control Human Population 3 Angle Two Bonds Methane Molecule 105 54 B 109 28 C 119 28 190 28 Prepared Fisher Tropsch Method Acetone B Acetic Acid C Acetaldehyde Ethanol Len Formula Derive Formula 1v 1u 1f Spherical Lens 5 Following Monomers Polythene Ch3 Ch3 B Ch2 Ch Ch Ch3 C Ch Ch Ch2 Ch2 Write Name Different Stages Obtaining Pure Metal Ore 5 Explain Refining Copper Electrolysis Diagram Nutrition Explain Heterotrophic Nutrition Types 5 Respiration Write Detail Note Human Respiratory Or Length Small Intestine Adult Human 3 5 B 6 5 C 4 5 2 5 Many Uriniferous Tubules Kidney 10 Lakhs B 20 Lakhs C 30 Lakhs 1 Lakh Following Structure Responsible Transportation Water Higher Plants Sieve Tube B Sieve Cell C Vessel Name Liquid Medium Blood Known Plasma B Blood Particles C Waste Excretory Substances Waste Material Waste Products Stored Plants Plant Cells B Cytoplasm C Phloem Cell Cellular Vacuoles Following Pairs True Testosterone Testes B Adrenaline Pituitary Gland C Pancreas Insulin Progesteron Cerebellum Medulla Oblongata Pons Part Mid Brain B Hind Brain C Fore Brain Spinal Cord Following True Methods Artificial Propagation Fission Budding B Layering Cutting Budding C Cutting L Many Chromosomes Human Ovum 46 B 64 C 23 32 Following Organs Homologous Organs Forelimb Human Lizard B Forelimb Lizard Frog C Wings Bat Birds Wi Human Species Genetic Roots India B America C Africa Australia Famous Constructive Functional Unit Ecosystem B Food Chain C Food Web None Chlorine Main Factor Damage Ozone Layer Cfc Considered Responsible 80 Total Decrease Ozone Layer Pol Names Endangered Plant Species Published Endangered Species Book B Green Data Book C Red Data Book Y One Day Contractor Workers Appeared Forest Cut Trees Men Folk Absent However Women Village Reached F Thermal Conductivity Standard Swnt Long Length Wattm K 3500 Watt K B 35 000 Watt K C 350 K Watt 3600 Name Nanotechnology Known Higher Performance Modern Technology B Ideal Technology C Engineering Tech Direction Incident Ray Shown Following Figure Go Reflection Passes Pole Mirror B Comes Back Directio Following Total Internal Reflection Light Possible Angle Incidence Critical Angle B Angle Incidence Gita Arranges Mirrors Group 1 Group 2 According Magnification Type Image Size Image Following Data S Colour Light Scattered Maximum Atmosphere Red B Yellow C Blue Green Following Figure Colours Number 1 2 Respectively Yellow Blue B Blue Yellow C Yellow Cyan Cyan Yellow Unit Electric Charge Si System Coulomb B Volt C Watt Ampere Used Anode Volta Cell Zinc Plate B Copper Plate C Carbon Rod Iron Plate Connection Resistances Divided Two Groups Follows Group 1 Group 2 Resistances Connected Series Equal Factor Resistance Conductor Depend Upon Volume Conductor B Length Conductor C Area Cross Section Con Gave Law Electromagnetic Induction Oersted B Faraday C Volta Ampere Many Times Ac Electric Current Frequency 50 Hz Change Direction 25 B 50 C 100 200 Figure Showing Fleming Left Hand Rule Given Finger Thumb Shows Direction Flow Electric Current First Following Statements Word Light Year Used Correctly Light Travels Speed 1 Light Year Universe B Cetu Distance Geo Stationary Satellites Earth 37 956 Km B 35 786 Km C 43 000 Km 23 123 Km Accident Space Shuttle Kalpana Chawla Died Columbia B Challenger C Discovery Atlantis Following Statement True Black Hole Emits Radiations Large Number B Temperature Directly Proportiona True Acidic Aqueous Solution H3o 10 7 B H3o 10 7 C H3o 10 7 H3o Oh Formed Reaction Metal Oxide Water Acid B Base C Salt Metal Student Class Discuss Acid Base Rule Follows Student 1 Substance Donates Proton Substance Acid Stude Ant Biten Khushi Playing Feeling Burning Sensation Acid May Entered Body Formic Acid B Melitin C Ben Reaction Metal Obtained Metal Oxide Liquefaction B Reduction C Calcination Roasting Following Substances Hygroscopic Cryolite B Feldspar C Anhydrous Calcium Chloride Slag Molecular Formula Calcium Hydride Cah2 B Cah C Ca2h Ca2h2 Following Carbon React Dilute Hydrochloric Acid B Dichlorine Gas C Dioxygen Gas Dihydrogen Gas N2 G 3h2 G 200 300 Bar773 K 2nh3 G Heat Following Works Catalyst Al2o3 B K2o C Fe V2o5 Following Weak Bleaching Agent Concentrated Sulphuric Acid B Dihydrogen Gas C Sulphur Sulphur Dioxid Give Four Examples Uses Nanostructure History 2 Carbon Forms Backbone Biology Life Earth Justify Write Faradays Laws Electrolysis 2 Write Physical Properties Ethene Gas 2 Explain Preparation Ethene Gas Dehydration Giving Chemical Eq Lymph Explain Constitution 2 Describe Types Biodegradable Waste Giving Examples 2 Write Brief Note Nakshatras 2 Reflection Give Two Examples 2 Many Times Acidic Aqueous Solution 2 Ph Compared 4 Ph 2 Write Two Points Differences Homologous Organs Analogous Organs 2 Heredity Explain Write Importance Forests 2 Looming Formed Explain Figure 3 Explain Construction Working Electric Bell Figure 3 Explain Characteristics Magnetic Field Lines Fig Write Uses Dihydrogen Gas 3 Explain Modern Method Industrial Production Acetic Acid Also Write Two Properties Uses 3 Soap Explai Vegetative Propagation Explain Vegetative Propagation Bryophyllum Figure 3 Explain Refraction Light Lateral Shift Using Rectangular Glass Slab Figure 5 Describe Reactivity Series Metals Also Describe Experiment Decide Order Reactivity Fe Cu Ag 5 Explai Respiration Explain Types Respiration 5 Answer Directed Role Hydrochloric Acid Stomach B Function En Following Alternative Shows Correct Path Oxygenated Blood Flow Human Beings Different Organs Right A Following Statement Wrong Arteries Arteries Carry Blood Heart Different Organs B Arteries Carry Pure Plants Photosynthetic Products Transported Sieve Cells B Sieve Cells Companion Cell C Sieve Tubes Co Say Nephron Structural Functional Unit Kidneys Mean P Kidney Made Many Nephrons Q Filtration Blood O Compared Animals Ability Speech Developed Humans Mainly Development Organ Responsible Mouth B Heart Mimosa Plant Grown One Pot Garden Leaves Get Folded Touching Behaviour Called Scientific Language Ph Organisms Type Reproductions Given Find Correct Alternative Showing Correct Pair Paramoecium 1 Spore Statement X Disease Aids Destroys Immunity Body Statement Gonorrhea Syphilis Sexually Transmitted Di Study Following Statements Choose Correct Alternative P Organs Internal Structure Different Function Following Statement True Variation Organisms P Occurrence Differences Among Individuals Species Know Following Statement Wrong Case Food Chain One Producers Consumers B Energy Available Lower Trophic L Food Chain Deer Eaten Lion Deer Eats Vegetation One Statements Given True P Lion Second Order Consum One Boy Goes School Vehicle Way Reaches Cross Road Red Signal Shown Turns Vehicle Green Signal Appea Increase Population Needs Increased Today World Facing Problem Energy Crisis Must Conserve Energy On Following Statement True Case Carbon Nano Tube Compressive Strength Compared Tensile Strength B Tens Microscopes Used See Extremely Minute Things Cannot Seen Naked Eyes Microscopes Invented P Optical M Signal Light Danger Red Colour Following Principle Principles Used P Red Coloured Light Scatters Lea Figure Given Shows Three Different Mirrors X Z Along Reflected Rays Find Correct Use Mirror Mirror X Ramesh Sitting Last Bench Class L0 Read Whatever Written Teacher Black Board Cannot Read Clearly Tex Sometimes See Rainbow Monsoon Season Fact Correct Rainbow Dispersion Incident Light First Reflection Section Defects Eye Given Section B Effects Arising Due Defects Given Section C Remedies Given Using Two Resistors 4 One Resistor 8 Connected Circuit Shown Equivalent Resistance Points B Circuit 8 B 16 Definite Physical Situation Electric Current Flowing Conductor Directly Proportional Potential Diff Correct Option Given Statement Statement B Statement Current Flowing Resistor Connected Series State Respect Direction Electric Current Conducting Wire Following True Direction Negatively Charged Parti Current Flowing Conductor Creates Magnetic Field Assume Source Magnetic Field Reversing Current Stra Following Case Induced Current Loop Obtained Loop Moved Direction Magnet B Loop Magnet Moved Opposit Solar System Comprises Sun Planets Satellites Asteroids Meteors Following Member Solar System Sun B Following True Case Bar Magnet Magnetic Field Lines Produced Around Magnetic Field Lines Intersect 9 Imaginary Sphere Covering Sky Earth Centre Known Celestial Sphere Ecliptic Celestial Sphere Divided Satellite Launched India Direct Home V Transmission Irs P B Insat 4a C Insat 1 Cartosat Stars Appear Red Colour Blue Colour One Statements True Star Blue Colour Temperature Red Colour Star Following Table Lists Ph Values Acids Bases Solutions Ph Hydrochloric Acid 1 Milk 6 Pure Water 7 Bak 3 Litre Aqueous Solution Prepared Dissolving 4 9 Gram H2so4 Water Calculate Ph Solution Need Calcula Following Substance Enters Body Red Ant Bites Us Melittin B Calcium Formate C Formic Acid Magnesium Substances Acidic Others Basic Scale Called Ph Scale Used Measure Extent Acidity Happen Ph Solution Rods Carbon Copper Hammered Simultaneously Property Carbon Responsible Carbon Rod Breaking Pieces Du Table Given Composition Alloys Based Table Answer Question Name Alloy Elements Alloy Bronz Cu Zn Bra Following Statement Incorrect Corrosion Iron Takes Place Contact Air Water B Method Convert Carbonat Make Correct Pairs Following Given X X Contains Substance Method Manufacture X 1 Extraction Sulphur Ammonia Filled Weather Balloons Work High Altitudes Neutral Gas B Compound Nitrogen C Lighter Air Li Physical Properties Substance Given P Colour Less Q Intense Smell R Aqueous Solution Possesses Basic Fractional Distillation Petroleum Different Fractions Obtained Name Carbon Atoms Temperature Range O Chemical Equations Preparing Substance Given Given Chemical Equation Used Preparation Ethyne 1 Ch3co Statement Wrong Anthracite Matured Form Mineral Coal B Burns Produces Smoke Smell C Heat Energy 33 K Water Gas Mixture Two Gases Carbon Dioxide Hydrogen B Carbon Monoxide Hydrogen C Carbon Hydrogen Amm Section Organic Compounds Section B Uses Mentioned Match Correct Options Section Section B 1 Ethanol Atom Group Atoms Characteristic Reactions Organic Compounds Determined Atom Group Atoms Called Hydro Polymer Used Non Stick Cooking Vessels Polythene B Isoprene C Teflon Neoprene Stomach Important Organ Digestive System Food Churned Stomach Nearly Three Hours Found Stomach Given Nanotechnology Help Face Future Challenges 2 Discuss Two Properties Carbon Nanotubes Give Definition Electric Current Define Unit 2 Briefly Explain Coal Tar Coal Gas 2 Distinguish L P G C N G Draw Diagram Human Excretory System Label 2 Global Problems Mean Global Problems Organisms Facing Today 2 Terrestrial Planets Mention Common Characteristics 2 Reflection Give Two Examples 2 Neutralisation Explain 2 Geographical Isolation Major Factor Speciation Organism Reproduces Sexually Give Reasons Answer 2 Ex Give Approaches Water Management 2 Explain Subtractive Method Mixing Pigment 3 State Characteristics Magnetic Field Lines 3 Precautions Taken Use Electricity Discuss Haber Process Industrial Manufacture Ammonia 3 Soap Describe Preparation 3 Describe Method Production Ethanol Fermentation Reaction Explain Female Reproductive Organs 3 Explain Method Obtaining Pure Aluminium Alumina 5 Concentration Ore Give Method Concentrating Sulphi Draw Labelled Diagram Human Digestive System Explain 5 Nutrition Mode Nutrition Amoeba Known Draw Di Define Term Power Accommodation Write Modification Curvature Eye Lens Enables Us See Nearby Objects Trace Sequence Events Occur Bright Light Focused Eyes Happens Image Distance Normal Human Eye Decrease Distance Object Say 10 1 Justify Answer Write Structure Eye Lens State Role Ciliary Muscles Human Eye Motion Pictures Cinema Make Use Range Visible Light Wavelength Humans 1 Nm 10 9 Ability Eye Adjust Focal Length Called