This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Light > Class 7 Science Chapter 11 Light – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 17 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Light travels fastest in ..... A) Liquids. B) Gases. C) Solids. D) A vacuum. Show Answer Correct Answer: D) A vacuum. 2. Which is the right mode from Q-Control to increase the Fan speed to Maximum? A) Quiet Mode. B) Balance Mode. C) Performance Mode. D) None of the above. Show Answer Correct Answer: C) Performance Mode. 3. The light beam emanating from a torch appears to be starting from a point and travels in various directions.Identify the nature of light emitted from a torchlight. A) Convergent. B) Divergent. C) Parallel. D) Irregular. Show Answer Correct Answer: B) Divergent. 4. The image formed by a concave mirror is observed to be virtual, erect and larger than the object. where should be position of the object? A) Between the principal focus and the center of curvature. B) At the center of curvature. C) Beyond the center of the curvature. D) Between the pole of the mirror and the principal focus. Show Answer Correct Answer: A) Between the principal focus and the center of curvature. 5. Earth's primary source of light A) Stars. B) Sun. C) Moon. D) Power company. Show Answer Correct Answer: B) Sun. 6. Sources of light can be? A) Opaque. B) Transparent. C) Shadow. D) Natural or artificial. Show Answer Correct Answer: D) Natural or artificial. 7. What type of image is formed when rays of light actually intersect? A) Curved. B) Real. C) Virtual. D) Projected. Show Answer Correct Answer: B) Real. 8. A material that lets light pass through A) Solid. B) Transparent. C) Opaque. D) Translucent. Show Answer Correct Answer: B) Transparent. 9. In a glass slab the emergent ray is ..... to incident ray A) Parallel. B) Opposite. C) Intersect. D) None. Show Answer Correct Answer: A) Parallel. 10. Length between two crest or troughs A) Frequency. B) Wavelength. C) Translucent. D) Transparent. Show Answer Correct Answer: B) Wavelength. 11. What happens during lateral inversion? A) The upper part of the object will be at the bottom of the object. B) The right side of the object will be on the left side of the image. C) The left side of the object will be on the left side of the image. D) The right of the object will be on the right side of the image. Show Answer Correct Answer: B) The right side of the object will be on the left side of the image. 12. Which of the following is NOT a product of the light reactions? A) Glucose (Sugar). B) Oxygen. C) ATP. D) NADPH. Show Answer Correct Answer: A) Glucose (Sugar). 13. We can see a non-luminous object when light ..... A) Emitted by the object falls on the eye. B) Is reflected from the object towards our eye. C) Completely passes through the object. D) Gets completely absorbed by the object. Show Answer Correct Answer: B) Is reflected from the object towards our eye. 14. A convex lens is A) Thick at the edges. B) Thin at the centre. C) Thick at the centre. D) Hollow at the centre. Show Answer Correct Answer: C) Thick at the centre. 15. When we move an object away from the source of light, the shadow of the object ..... A) Become bigger. B) Becomes smaller. C) Remains the same. D) None of these. Show Answer Correct Answer: B) Becomes smaller. 16. If you look at a yellow banana through a red filter, what color will the banana be? A) Blue. B) Yellow. C) Red. D) Green. Show Answer Correct Answer: C) Red. 17. A material that blocks light from passing through it. Ex:wood and metal A) Lens. B) Transparent. C) Opaque. D) Translucent. Show Answer Correct Answer: C) Opaque. 18. Light is form of energy A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. Which waves have the highest energy? A) Visible Light. B) Gamma Ray. C) Infrared. D) Radio. Show Answer Correct Answer: B) Gamma Ray. 20. Translucent objects let only some light pass thru? A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 21. Reflection of light have ..... laws. A) 1. B) 3. C) 4. D) 2. Show Answer Correct Answer: D) 2. 22. In which of these situations would light slow down? A) From glass to air. B) From ice to water. C) From plastic to air. D) From a vacuum to air. Show Answer Correct Answer: D) From a vacuum to air. 23. Virtual images are A) Inverted. B) Magnified. C) Erect. D) Fake. Show Answer Correct Answer: C) Erect. 24. When light changes speed, its path is changed so that light rays are bent as they pass through. This is called: A) Mirroring. B) Absorption. C) Refraction. D) Reflection. Show Answer Correct Answer: C) Refraction. 25. When magenta, cyan and yellow pigments overlap, they will create what color? A) Black. B) White. C) Blue. D) Red. Show Answer Correct Answer: A) Black. 26. Which of the following is not an opaque material? A) Mirror. B) Glass. C) Wood. D) Frosted glass. Show Answer Correct Answer: C) Wood. 27. Dentists use which types of mirror to see larger image of teeth? A) Concave. B) Convex. C) All the above. D) None of the above. Show Answer Correct Answer: A) Concave. 28. Given a point source of light, which of the following can produce a parallel beam of light? A) Concave mirror. B) Diverging lens. C) Prism. D) Converging lens. Show Answer Correct Answer: D) Converging lens. 29. What occurs when an object takes in a light wave? A) Refraction. B) Absorption. C) Reflection. D) Transparent. Show Answer Correct Answer: B) Absorption. 30. Example of a translucent object is A) Tissue paper. B) Board. C) Rubber. D) Door. Show Answer Correct Answer: A) Tissue paper. 31. The resulting color of light when blue is mix with green. A) Yellow. B) Cyan. C) Orange. D) Magenta. Show Answer Correct Answer: B) Cyan. 32. A spherical mirror and a thin spherical lens have each a focal length of-15cm. The mirror and the lens are likely to be A) Both concave. B) Both convex. C) The mirror is concave and the lens is convex. D) The mirror is convex, but the lens is concave. Show Answer Correct Answer: A) Both concave. 33. Lens that is thicker in the middle and thinner at the edges A) Concave. B) Reflection. C) Refraction. D) Convex. Show Answer Correct Answer: D) Convex. 34. If an object is placed 45 cm from a convex lens. The object placed at a distance 90 cm, then it's focal length is A) -10 cm. B) + 10 cm. C) + 30 cm. D) -30 cm. Show Answer Correct Answer: C) + 30 cm. 35. ..... is formed because ..... travels in a straight line A) Light, shadow. B) Shadow, light. C) Not sure. D) None of the above. Show Answer Correct Answer: B) Shadow, light. 36. If you stand in front of two adjacent large mirrors at 90$^\circ$ angle, how many images will you see? A) 2. B) 3. C) 1. D) 4. Show Answer Correct Answer: B) 3. 37. Light can both reflect (bounce) and refract (bend) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 38. What is the principal axis? A) A line which passes through the centre of a mirror. B) A line along which the focal length is measured. C) All of the above. D) None of the above. Show Answer Correct Answer: C) All of the above. 39. When we look into a glass mirror, light ..... A) Bends as it passes through. B) Bounces back in a random order. C) Hits the mirror and is absorbed. D) Bounces back at the same angle it strikes the mirror at. Show Answer Correct Answer: D) Bounces back at the same angle it strikes the mirror at. 40. The moon does not have light of its own. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 41. Plural form of leaf A) Leafs. B) Leaves. C) Leafes. D) None of the above. Show Answer Correct Answer: B) Leaves. 42. Which of the following describes the image formed by a plane mirror? A) Real, upright, same size as the object. B) Real, inverted, and reduced. C) Virtual, upright, & same size as the object. D) Virtual, inverted and enlarged. Show Answer Correct Answer: C) Virtual, upright, & same size as the object. 43. A mirror, water, and foil would all reflect light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 44. What is an image? A) The impression of the object created by the light on the mirror. B) The impression of the object on a paper. C) The impression of the object created by the sound on the mirror. D) None of the above. Show Answer Correct Answer: A) The impression of the object created by the light on the mirror. 45. When light bounces off another object at an angle A) Refraction. B) Spectrum. C) Transparent. D) Reflection. Show Answer Correct Answer: D) Reflection. 46. A prism is an object that A) Separates wavelenghts. B) Refracts light. C) Separates white light into bands of colored light. D) None of the above. Show Answer Correct Answer: C) Separates white light into bands of colored light. 47. Which of the following are used in projectors? A) Concave lens. B) Plane mirrors. C) Convex mirrors. D) Convex lenses. Show Answer Correct Answer: D) Convex lenses. 48. Light travels at the speed of ..... A) 1200 per min. B) 72 sec. C) 35000 per hour. D) 30, 000 km/s. Show Answer Correct Answer: D) 30, 000 km/s. 49. Which of the following is true about convex lens? A) Buldged outwards at the middle. B) Converging nature. C) Produces both real and virtual images. D) All of the above. Show Answer Correct Answer: D) All of the above. 50. Butter (tracing) paper is ..... which will let some light pass through it. A) Light. B) Opaque. C) Transparent. D) Translucent. Show Answer Correct Answer: D) Translucent. 51. What is the earth's primary source of light energy? A) Sun. B) Fire. C) Waves. D) Moon. Show Answer Correct Answer: A) Sun. 52. Spinning of Earth on its axis is A) Rotation. B) Revolution. C) All the above. D) None of the above. Show Answer Correct Answer: A) Rotation. 53. Why does the Moon shine at night? A) It is creating light. B) It is a light source. C) It reflects the Sun's light. D) It doesn't shine at night. Show Answer Correct Answer: C) It reflects the Sun's light. 54. To make a kaleidoscope we require ..... A) Four plane mirrors. B) Three plane mirrors. C) Three glass sheets. D) Four glass sheets. Show Answer Correct Answer: B) Three plane mirrors. 55. Example of natural source of light A) Sun, stars. B) Torch, candle. C) All of them. D) Only sun. Show Answer Correct Answer: A) Sun, stars. 56. What is/are the products of light independent reaction? A) C6H12O6. B) H2O. C) Pyruvate. D) NADPH. E) ATP. Show Answer Correct Answer: A) C6H12O6. 57. Moon produces its own light A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 58. When a ray travels from rarer to denser it will bend A) Towards the normal. B) At the normal. C) Away from normal. D) Through the normal. Show Answer Correct Answer: A) Towards the normal. 59. What two colors make purple? A) Red and White. B) Red and Blue. C) Red and Green. D) Red and Black. Show Answer Correct Answer: B) Red and Blue. 60. Objects that ABSORB all colors of light will appear ..... A) Gray. B) White. C) Multi-colored. D) Black. Show Answer Correct Answer: D) Black. ← 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