This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Light > Class 7 Science Chapter 11 Light – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How do the lenses in eyeglasses help correct a person's vision? A) They bend it. B) They reflect it. C) Separate it into colors. D) They absorb it. Show Answer Correct Answer: A) They bend it. 2. Shadow is similar in ..... as that of opaque object A) Shape. B) Light. C) All the above. D) None of the above. Show Answer Correct Answer: A) Shape. 3. Image formed by a mirror having a focal length of 20 cm, reduced to 1/3$^{rd}$ of its size, is formed behind the mirror. At what distance the object has been placed from the mirror? A) 20 cm. B) 30 cm. C) 10 cm. D) 40 cm. Show Answer Correct Answer: D) 40 cm. 4. Objects that block all light and create shadows A) Translucent. B) Prism. C) Opaque. D) Transparent. Show Answer Correct Answer: C) Opaque. 5. What does a source of light do? A) Makes light. B) Reflects light. C) Absorbs light. D) None of the above. Show Answer Correct Answer: A) Makes light. 6. A blue object appears blue because it ..... blue light. A) Refracts. B) Likes. C) Reflects. D) Absorbs. Show Answer Correct Answer: C) Reflects. 7. This is the example of dispersion of light A) Sky looks bright orange in the evening. B) Shadow. C) Pool seems shallower. D) Rainbow. Show Answer Correct Answer: D) Rainbow. 8. What does it mean to refract? A) Bounce off. B) Curve outward. C) Reflect. D) To bend. Show Answer Correct Answer: D) To bend. 9. According to Willebord Snell, light passing from air to glass will cause the light to A) Increase its speed. B) Reduce its speed. C) Accelerate while it is in glass. D) Maintain its original speed. Show Answer Correct Answer: B) Reduce its speed. 10. Choose an example of transparent object A) Book. B) Wall. C) Glass. D) Ball. Show Answer Correct Answer: C) Glass. 11. Hydrogen is a reactant. Light independent or light dependent stage? A) Light independent stage. B) Light dependent stage. C) All the above. D) None of the above. Show Answer Correct Answer: A) Light independent stage. 12. Interchange of the 'left' and 'right' sides in the image is known as- A) Lateral inversion. B) Reflection. C) All the above. D) None of the above. Show Answer Correct Answer: A) Lateral inversion. 13. Brooke wakes up in the morning to rind a rainbow produced by light shining through the fish tank near her window. Which of the following types of electromagnetic radiation produced the rainbow that Brooke saw? A) White light. B) Infrared. C) Gamma rays. D) Ultraviolet. Show Answer Correct Answer: A) White light. 14. As volume increases, ..... increases. A) Resting point. B) Pitch. C) Frequency. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 15. The mirror whose focal length is negative is? A) Diverging mirror. B) Concave mirror. C) Convex mirror. D) Plane mirror. Show Answer Correct Answer: B) Concave mirror. 16. Which type of surface reflects light MOST clearly? A) Angled and dark. B) Shiny and smooth. C) Dark and grooved. D) Curved and clear. Show Answer Correct Answer: B) Shiny and smooth. 17. Which one of the following statements is true? A) A plane mirror sometimes forms an inverted image. B) A concave mirror always forms a virtual, erect and diminished image. C) A concave lens always forms a virtual, erect and diminished image. D) All of the above. Show Answer Correct Answer: C) A concave lens always forms a virtual, erect and diminished image. 18. When a light ray bounces off a rough surface, it reflects all over the place A) Diffraction. B) Scattering. C) Transmission. D) Reverberation. Show Answer Correct Answer: B) Scattering. 19. Occurs when light is sent in many direction as it passes through a medium. A) Absorption. B) Refraction. C) Scattering. D) Reflection. Show Answer Correct Answer: C) Scattering. 20. What is the role of light in photosynthesis? A) Light is only needed for plant growth, not photosynthesis. B) Light is used to absorb nutrients from the soil. C) Light is a byproduct of photosynthesis. D) Light is essential for photosynthesis as it provides the energy required for the conversion of carbon dioxide and water into glucose. Show Answer Correct Answer: D) Light is essential for photosynthesis as it provides the energy required for the conversion of carbon dioxide and water into glucose. 21. Dentist uses this to obtain an enlarged image of teeth A) Convex mirror. B) Concave mirror. C) All the above. D) None of the above. Show Answer Correct Answer: B) Concave mirror. 22. In the ..... , energy from the sun is used to make ATP A) Light-independent reaction. B) Light-dependent reaction. C) Calvin cycle. D) Dark reaction. Show Answer Correct Answer: B) Light-dependent reaction. 23. A form of matter that may or may not allow light to pass through it A) Small. B) Medium. C) Soild. D) Gas. Show Answer Correct Answer: B) Medium. 24. Rainbows are often seen A) Before a rainstorm. B) After the sun sets at night. C) Before a storm. D) After a rainstorm. Show Answer Correct Answer: D) After a rainstorm. 25. Which of the following is used as a side view mirror? A) Convex mirror. B) Concave mirror. C) Convex lens. D) Plane mirror. Show Answer Correct Answer: A) Convex mirror. 26. This mirror is also used as a shaving mirror to see a magnified image A) Convex and concave. B) Concave Mirror. C) Concavoconvx. D) Convex lens. Show Answer Correct Answer: B) Concave Mirror. 27. ..... is the bouncing back of light rays when striking on a surface. A) Refraction. B) Reflection. C) Repel. D) None of these. Show Answer Correct Answer: B) Reflection. 28. Light travels at a speed of ..... km/s. A) 3 lakh. B) 30 lakh. C) 3 million. D) 3000. Show Answer Correct Answer: A) 3 lakh. 29. Shining light on a ball covered with many tiny mirrors will cause light to ..... A) Refract from the mirrors. B) Reflect in many different directions. C) Reflect back in a curved line. D) Reflect straight back. Show Answer Correct Answer: B) Reflect in many different directions. 30. Light bends as it passes through water A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 31. An object which does not emit its own light is a non-luminous body. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 32. Shadows do not depend on the ..... of the object. A) Size. B) Light. C) Shape. D) Colour. Show Answer Correct Answer: D) Colour. 33. What are opaque objects? A) Objects that cannot let light pass through. B) Objects that can let little light pass through. C) Objects that can let light pass through. D) None of the above. Show Answer Correct Answer: A) Objects that cannot let light pass through. 34. When all of the colors of light are absorbed, we see the color ..... A) Red. B) White. C) Black. D) Green. Show Answer Correct Answer: C) Black. 35. What is needed to cast a shadow? A) Translucent or Opaque object. B) All of these. C) Screen. D) Source of light. Show Answer Correct Answer: B) All of these. 36. Unpleasant and loud sound can cause A) Sleeping disorders. B) Hearing problems. C) Aggression in animals. D) All of the above. Show Answer Correct Answer: D) All of the above. 37. An example of opaque. A) Window. B) Frosted glass. C) Wax paper. D) Metal spoon. Show Answer Correct Answer: D) Metal spoon. 38. How can a fire truck send a message to other cars that they can see? A) It has sirens. B) It has flashing lights. C) It has a horn. D) None of the above. Show Answer Correct Answer: B) It has flashing lights. 39. If red light and green light are shone onto a white surface, it will appear ..... A) It will appear yellow. B) It will appear green. C) It will appear cyan. D) It will appear magenta. E) It will appear white. Show Answer Correct Answer: A) It will appear yellow. 40. A shadow is formed because light travels in a straight line. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 41. If you are wearing a black sweatshirt, what happens to most of the light that strikes the sweatshirt A) It is absorbed. B) It is reflected. C) It is transmitted. D) None of the above. Show Answer Correct Answer: A) It is absorbed. 42. A full length image of a distance tall building can definitely be seen by using A) A concave mirror. B) A convex mirror. C) A plane mirror. D) Both palane and concave mirror. Show Answer Correct Answer: B) A convex mirror. 43. If a material does not let any light go through, that material is called ..... A) Opaque. B) Absorbent. C) Translucent. D) Transmitted. Show Answer Correct Answer: A) Opaque. 44. Light travel fastest in A) Diamond. B) Air. C) Glass. D) Water. Show Answer Correct Answer: B) Air. 45. The image of an object retains on the retina for about ..... of the second even after the object has disappeared from our view. A) 1/16 th. B) 1/15 th. C) 1/10 th. D) 1/ 17 th. Show Answer Correct Answer: A) 1/16 th. 46. A VERY NARROW PATH OF LIGHT IS A) SHOWER. B) LINE. C) RAY. D) BEAM. Show Answer Correct Answer: C) RAY. 47. The distance between the object and its image formed by a plane mirror appears to be 24 cm. What is the distance between the mirror and the object? A) 12 cm. B) 24 cm. C) 20 cm. D) 10 cm. Show Answer Correct Answer: A) 12 cm. 48. What is visible light used in? A) When we Breathe. B) Light Bulbs, TVs, Lasers. C) Sound. D) Nothing, Visible light cannot be used. Show Answer Correct Answer: B) Light Bulbs, TVs, Lasers. 49. The energy of an electromagnetic wave is related to its frequency. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 50. A person 1m in front of a plain mirror seeems ot be ..... m away from his image A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 51. Shiny and smooth surfaces dont reflect much light A) True. B) False, the dull surfaces dont reflect much light. C) All the above. D) None of the above. Show Answer Correct Answer: B) False, the dull surfaces dont reflect much light. 52. The taking in of light energy by an object A) Reflection. B) Absorption. C) Compression. D) Refraction. Show Answer Correct Answer: B) Absorption. 53. The refractive index assumes the entrance of light from A) Vaccum. B) Water. C) Air. D) Glass. Show Answer Correct Answer: A) Vaccum. 54. You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either A) Concave mirror or convex lens. B) Concave mirror or concave lens. C) Concave mirror or convex mirror. D) Concave lens or convex lens. Show Answer Correct Answer: A) Concave mirror or convex lens. 55. The size of the pupil of the eye is adjusted by A) Cornea. B) Ciliary muscle. C) Optic nerve. D) Iris. Show Answer Correct Answer: D) Iris. 56. Requires light to occur. Light independent or light dependent stage? A) Light independent stage. B) Light dependent stage. C) All the above. D) None of the above. Show Answer Correct Answer: B) Light dependent stage. 57. In which form is light emitted A) Particle. B) Wave. C) All the above. D) None of the above. Show Answer Correct Answer: A) Particle. 58. What does it mean to reflect? A) Bend. B) Refract. C) Energy. D) Bounce off. Show Answer Correct Answer: D) Bounce off. 59. A rainbow can be seen in the sky when the sun is A) In front of you. B) Overhead. C) Only at the time of sunrise. D) Behind you. Show Answer Correct Answer: D) Behind you. 60. An object is placed at a concave mirror's center of curvature. The image produced by the mirror is located A) Out beyond the center of curvature. B) At the center of curvature. C) Between the center of curvature and the focal point. D) At the focal point. Show Answer Correct Answer: B) At the center of curvature. ← 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 7Class 7 Science Chapter 11 Light Quiz 8Class 7 Science Chapter 11 Light Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books