This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Light > Class 7 Science Chapter 11 Light – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When light bounces off an object A) Absorbs. B) Refracts. C) Reflects. D) None of the above. Show Answer Correct Answer: C) Reflects. 2. When light passess through this object, it is refracted off of one wall and reflected to another, the light is refracted again and as it leaves the object, it forms a rainbow. What is this object? A) Magnifying glass. B) Window. C) Mirror. D) Prism. Show Answer Correct Answer: D) Prism. 3. X is a surface that cannot produce clear images. What is X? A) Smooth surface. B) Ideal surface. C) Smooth but curved surface. D) Rough surface. Show Answer Correct Answer: D) Rough surface. 4. What is the saying that can help you remember the order of the visible spectrum? A) Lu Hi VG. B) Ribyovg. C) Coasty. D) ROYBVIG. Show Answer Correct Answer: C) Coasty. 5. This object is used in cameras, DVD players, telescopes, and microscopes to refract light A) Mirror. B) Lamp. C) Lens. D) Laser. Show Answer Correct Answer: C) Lens. 6. The closer the screen, the ..... is the shadow formed. A) Fatter. B) Smaller. C) Bigger. D) Lighter. Show Answer Correct Answer: B) Smaller. 7. The closer the source of light, the ..... is the shadow. A) Same size. B) Bigger. C) Smaller. D) Clearer. Show Answer Correct Answer: B) Bigger. 8. How fast does light travel through empty space (a vacuum) in miles per second? A) 18, 600. B) 5920. C) 343. D) 186, 000. Show Answer Correct Answer: D) 186, 000. 9. Light travels faster in water than in air. A) Depends on the pressure. B) True. C) False. D) Depends on the temperature. Show Answer Correct Answer: C) False. 10. The impression of an image doesn't vanish immediately from the retina. It persists there for about ..... secs A) 1/6. B) 1/16 th. C) 4/16 th. D) 1/17 th. Show Answer Correct Answer: B) 1/16 th. 11. The distance between Nitin and his image is 6m. As he moves 2m towards the plane mirror, Calculate the distance between mirror and his image. A) World Cup. B) 8m. C) 1m. D) Or. Show Answer Correct Answer: C) 1m. 12. The colour of the shadow depends on the colour of ..... A) Capactiy. B) Heat. C) Waves. D) Light. Show Answer Correct Answer: D) Light. 13. Black absorbs all light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. A translucent object, such as a piece of colored glass, allows ..... light to pass through it. A) No. B) Some. C) All. D) None of the above. Show Answer Correct Answer: B) Some. 15. Refractions will cause the object to look A) The same. B) Smaller & straight. C) Larger & bent. D) A different color. Show Answer Correct Answer: C) Larger & bent. 16. Light bends when it is A) Refracted. B) Reflected. C) Absorbed. D) None of the above. Show Answer Correct Answer: A) Refracted. 17. A window is an example of ..... object. A) An opaque. B) A transparent. C) All the above. D) None of the above. Show Answer Correct Answer: B) A transparent. 18. Retina consists of A) Rods only. B) Cones only. C) Iris and Pupil. D) Rods and Cones. Show Answer Correct Answer: D) Rods and Cones. 19. ..... -the angle between the normal and the reflected ray. A) Angle of reflection. B) Angle of direction. C) Angle of incidence. D) Angle of coincidence. Show Answer Correct Answer: A) Angle of reflection. 20. When the Moon comes between the Sun and The Earth, it blocks the light from the Sun and causes A) Lunar Eclipse. B) Solar Eclipse. C) All the above. D) None of the above. Show Answer Correct Answer: B) Solar Eclipse. 21. The lens focuses light on the back of the eye, on a layer called A) Retina. B) Iris. C) Optic nerves. D) Pupil. Show Answer Correct Answer: A) Retina. 22. Which object reflects the most light? A) Wood table. B) Mirror. C) Soft blanket. D) None of the above. Show Answer Correct Answer: B) Mirror. 23. In an experiment, the shadow was formed but not so clear. Which type of object do you think was used in this experiment? A) A transparent plastic. B) Manila card. C) Wooden block. D) Coloured paper. Show Answer Correct Answer: D) Coloured paper. 24. Light travels through an object during A) Diffraction. B) Reflection. C) Transmission. D) Absorption. Show Answer Correct Answer: C) Transmission. 25. Does light go and come back in 40* A) Yes. B) No. C) Non of above. D) None of the above. Show Answer Correct Answer: A) Yes. 26. What is a beam of light called A) It is just a beam of light. B) A light ray. C) Non of the above. D) A group of light rays given out from a light soruce. Show Answer Correct Answer: D) A group of light rays given out from a light soruce. 27. Bouncing of a polished surface by a ray of light is called A) Excretion. B) Reflecton. C) Human eye. D) Dispertion. Show Answer Correct Answer: B) Reflecton. 28. Refraction may cause your image in water to look A) Smooth. B) Darker. C) Bent. D) Lighter. Show Answer Correct Answer: C) Bent. 29. The crown glass in Benzin does not see a glass because the refraction index of both A) Almost the same is the same. B) Has a great difference. C) Has an inherent difference. D) Varies. Show Answer Correct Answer: A) Almost the same is the same. 30. Which types of surfaces reflect light well? A) Light coloured and smooth. B) Dark coloured and dull. C) Dark coloured and smooth. D) Light coloured and bumpy. Show Answer Correct Answer: A) Light coloured and smooth. 31. If you wish to get enlarged image of any object, which mirror will u select? A) Convex mirror. B) Plane mirror. C) None of these. D) Concave mirror. Show Answer Correct Answer: D) Concave mirror. 32. When ray of light is incident normally on the surface of the plane mirror, the angle of incidence is: A) 0 degrees. B) 90 degrees. C) 45 degrees. D) 60 degrees. Show Answer Correct Answer: A) 0 degrees. 33. A blue shirt looks blue because ..... A) It absorbs blue and reflects all the colors. B) It reflects blue and absorbs all the other colors. C) It absorbs cyan and reflects all the other colors. D) It reflects cyan and absorbs all the other colors. Show Answer Correct Answer: B) It reflects blue and absorbs all the other colors. 34. Which waves have the lowest energy? A) Infrared. B) Visible Light. C) Gamma Ray. D) Radio. Show Answer Correct Answer: D) Radio. 35. The primary colours of light are A) Red, blue, and purple. B) Red, green, and yellow. C) Red, green, and blue. D) Red, yellow, and blue. Show Answer Correct Answer: C) Red, green, and blue. 36. A beam of light when light moves from sporadic media to the compact media A) Moves away from the vertical. B) The vertical pile moves. C) Moves toward the vertical. D) Light will be reflected. Show Answer Correct Answer: C) Moves toward the vertical. 37. Who was rajiv's father? A) Raghav. B) Madhav. C) Sudama. D) None of the above. Show Answer Correct Answer: B) Madhav. 38. What is the natural light source at night time? A) Moon. B) Sun. C) Stars. D) None of the above. Show Answer Correct Answer: C) Stars. 39. Light appears white or transparent, but it is actuallymade up of several different colours.Is the given statement true or false? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 40. A rainbow in the sky can be seen? A) When the sun is right in front of us. B) Only at time of sunrise. C) When sun is behind us. D) When sun is over head. Show Answer Correct Answer: C) When sun is behind us. 41. The point of intersection of Incident ray and Reflected ray is A) Abnormal line. B) Plane. C) Principal axis. D) Normal line. Show Answer Correct Answer: D) Normal line. 42. The primary colors of LIGHT are: A) Red, yellow, blue. B) Yellow, cyan, magenta. C) Red, green, and blue. D) Red, orange, yellow, green, blue, violet. Show Answer Correct Answer: C) Red, green, and blue. 43. Sun is a natural source of light A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 44. Meaning of absorb in light A) A solid material that blocks light and creates shadows. B) To pass through a substance. C) A material that light can travel through. D) To soak up. Show Answer Correct Answer: D) To soak up. 45. Choose the right option A) With a sorce of light we can not see. B) We can see with out a sorce of light. C) Non of the above. D) None of the above. Show Answer Correct Answer: A) With a sorce of light we can not see. 46. When an object blocks light, you get A) A surprise. B) A shadow. C) Darkness. D) An eclipse. Show Answer Correct Answer: B) A shadow. 47. Which point in the spherical mirror converges all the light beams that are parallel to principal axis. A) Focal Length. B) Focus. C) Centre of Curvature. D) None of these. Show Answer Correct Answer: B) Focus. 48. A student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen moves the lens: A) Either towards or away from the screen. B) Away from screen. C) To a position very far away from the screen. D) Towards the screen. Show Answer Correct Answer: D) Towards the screen. 49. What is NOT the product of light dependent reaction? A) NADPH. B) O2. C) H2O. D) ATP. Show Answer Correct Answer: C) H2O. 50. If the image can not be taken in the screen, it must be A) Real. B) Unreal. C) Virtual. D) None of these. Show Answer Correct Answer: C) Virtual. 51. Identify translucent material from the following. A) Thin sheet. B) Brick wall. C) Clean water. D) Mirror. Show Answer Correct Answer: A) Thin sheet. 52. The refractive index of glass is 1.50, then the speed of light in glass Will be A) 1 X 10 power of 8 ms-1. B) 4 X 10 power of 8 ms-1. C) 6 X 10 power of 8 ms-1. D) 2 X 10 power of 8 ms-1. Show Answer Correct Answer: D) 2 X 10 power of 8 ms-1. 53. Speed of light is A) 3X10$^{8 }$m/s. B) 3X10 m/s. C) 3X10$^{5 }$m/s. D) 3X10$^{10 }$m/s. Show Answer Correct Answer: A) 3X10$^{8 }$m/s. 54. Solar eclipse lasts for A) 5-10 minutes. B) An hour. C) 25 seconds. D) None of the above. Show Answer Correct Answer: A) 5-10 minutes. 55. A lemon appears yellow when light is shone on it because the lemon ..... yellow light. A) Absorbs. B) Reflects. C) Refracts. D) Bends. Show Answer Correct Answer: B) Reflects. 56. To identify the amplitude in a longitudinal wave, you would measure areas of A) Compression. B) Reflection. C) Refraction. D) Crests. Show Answer Correct Answer: A) Compression. 57. In the evening sunlight travels trough a lot of air. The blue light ..... , leaving only redder light. A) Refracts. B) Absorbs. C) Scatters. D) Reflects. Show Answer Correct Answer: C) Scatters. 58. What happens when light transitions into a new medium? A) Refraction. B) Absorbing. C) Reflection. D) Mirror. Show Answer Correct Answer: A) Refraction. 59. Which would reflect light rather than bend it? A) Magnifying glass. B) Crystal. C) Prism. D) Mirror. Show Answer Correct Answer: D) Mirror. 60. Splitting of light into its colours is known as ..... of light A) Rainbow. B) Dispersion. C) Fiber. D) Spectrum. Show Answer Correct Answer: B) Dispersion. ← PreviousNext →Related QuizzesScience QuizzesClass 7 QuizzesClass 7 Science Chapter 11 Light Quiz 1Class 7 Science Chapter 11 Light Quiz 2Class 7 Science Chapter 11 Light Quiz 3Class 7 Science Chapter 11 Light Quiz 4Class 7 Science Chapter 11 Light Quiz 5Class 7 Science Chapter 11 Light Quiz 6Class 7 Science Chapter 11 Light Quiz 7Class 7 Science Chapter 11 Light Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books