This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Light > Class 7 Science Chapter 11 Light – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 8 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The three primary colors of light are A) Pink, Green, Blue. B) Red, Blue, Yellow. C) Violet, Green, Red. D) Blue, Green, Red. Show Answer Correct Answer: D) Blue, Green, Red. 2. If the sun is towards your left, your shadow will be formed towards your A) Back. B) Shadow will not be formed. C) Right. D) Left. Show Answer Correct Answer: C) Right. 3. No shadow is formed when light passes through an object. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Sources of light are A) Natural. B) Artificial. C) Both a and b. D) None. Show Answer Correct Answer: C) Both a and b. 5. Paper kept under a magnifying glass burns because A) Diverging of sunlight. B) Reflection of sunlight. C) Converging of sunlight. D) Dispersion of sunlight. Show Answer Correct Answer: C) Converging of sunlight. 6. Colors that bend the most have longer wavelength A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 7. Jace wants to make a shadow on the wall in front of him. Which is the best way for Jace to make the shadow? A) Jace should put a lamp in front of him. B) Jace should stand near an open window. C) Jace should stand between the wall and a lamp. D) Jace should turn off all of the lights in the room. Show Answer Correct Answer: C) Jace should stand between the wall and a lamp. 8. A dentist uses a small dental mirror to help magnify teeth in your mouth. What type of mirror is this? A) A convex lens. B) A convex mirror. C) A concave lens. D) A concave mirror. Show Answer Correct Answer: D) A concave mirror. 9. What is the start weight of IdeaPad Slim 3/3i? A) 2.2 Kg. B) 1.79 Kg. C) 1.85 Kg. D) 1.69 Kg. Show Answer Correct Answer: C) 1.85 Kg. 10. Another name for a light source is A) Luminous object. B) Non-luminous object. C) Opaque. D) Reflector. Show Answer Correct Answer: A) Luminous object. 11. An object 4 cm high is placed at 15 cm in front of a convex mirror having a radius ofcurvature of 10 cm. Then the image formed is at a distance of A) 20 cm. B) 7.5 cm. C) 5 cm. D) 12.5 cm. Show Answer Correct Answer: B) 7.5 cm. 12. If a black and white car were in the parking lot all day. Compare the temperatures of the two cars. A) The black car would be hotter. B) The black car would be cooler. C) The white car would be hotter. D) They would be the same. Show Answer Correct Answer: A) The black car would be hotter. 13. Which of the following is required for the formation of shadow? A) Source of light and an opaque object. B) Source of light and a screen. C) An opaque object and a screen. D) Source of light. a screen and an opaque object. Show Answer Correct Answer: D) Source of light. a screen and an opaque object. 14. How do we see objects which does not emit light? A) Light from the light source enters our eyes. B) Light from light source reflects off the object then enters our eyes. C) Our eyes can see the object because there is light. D) None of the above. Show Answer Correct Answer: B) Light from light source reflects off the object then enters our eyes. 15. The number of images formed when the angle between two mirrors is 24 degree is A) 20. B) 18. C) 14. D) 16. Show Answer Correct Answer: C) 14. 16. The color violet has the highest energy and frequency. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 17. What is a good example of an object that shows reflections? A) Beach towel. B) Brick wall. C) Mirror. D) Camera. Show Answer Correct Answer: C) Mirror. 18. Which of the following is not a source of light? A) The Sun. B) The Moon. C) Torch. D) None of the above. Show Answer Correct Answer: B) The Moon. 19. The angle of incidence is equal to the angle of reflection A) Law of light. B) Law of reflection. C) Law of refraction. D) Law of incidence. Show Answer Correct Answer: B) Law of reflection. 20. If yellow light shines on a green object A) It will appear blue. B) It will appear green. C) It will appear red. D) It will appear black. Show Answer Correct Answer: B) It will appear green. 21. A ..... shadow is formed by your notebook because it is ..... A) Dark, translucent. B) Dark, transparent. C) Dark, opaque. D) Light, translucent. Show Answer Correct Answer: C) Dark, opaque. 22. Real image is always A) Inverted. B) Erect. C) Real. D) Virtual. Show Answer Correct Answer: A) Inverted. 23. A lens will ..... light A) Reflect. B) Refract. C) All the above. D) None of the above. Show Answer Correct Answer: B) Refract. 24. How is light produced? A) When a chemical reaction takes place. B) When reactions including nucleaus take place. C) When reaction gives off discrete packages. D) None of the above. Show Answer Correct Answer: C) When reaction gives off discrete packages. 25. Which surface would reflect light the best? A) Light coloured and smooth. B) Dark coloured and smooth. C) Dark coloured and rough. D) None of the above. Show Answer Correct Answer: A) Light coloured and smooth. 26. When an object is kept in between two mirrors placed perpendicular to each other, how many images of the object are formed? A) 2. B) 3. C) 0. D) 5. Show Answer Correct Answer: B) 3. 27. Fireflies have artificial source of light A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 28. Which of the following produces light energy? A) A mirror. B) A campfire. C) A horse. D) A book. Show Answer Correct Answer: B) A campfire. 29. What are transparent 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: C) Objects that can let light pass through. 30. Light enters our eyes through the ..... A) Iris. B) Cornea. C) Lens. D) Pupil. Show Answer Correct Answer: D) Pupil. 31. To bounce off and go in the opposite directions A) Reflection. B) Transfer. C) Absorption. D) Refraction. Show Answer Correct Answer: A) Reflection. 32. When you are at a basketball game, what happens to the sound waves coming from the mouths of many people? A) Destructive interference. Each wave takes energy away from the sounds it combines with. B) Constructive interference:the waves "add" together to make a louder wave. C) James Benson's waves take over all other waves. D) The waves refract with each other and fall apart. Show Answer Correct Answer: B) Constructive interference:the waves "add" together to make a louder wave. 33. The rotation of the earth causes A) Lunar Eclipse. B) Solar Eclipse. C) Change in season. D) Day and night. Show Answer Correct Answer: D) Day and night. 34. LUNAR ECLIPSE IS A) SHADOW OF EARTH FALLING ON MOON. B) SHADOW OF MOON FALLING ON EARTH. C) SHADOW OF SUN FALLING ON EARTH. D) SHADOW OF SUN FALLING ON MOON. Show Answer Correct Answer: A) SHADOW OF EARTH FALLING ON MOON. 35. The number of images of an object placed between two mirrors inclined at an angle of45$^\circ$ are A) 5. B) 10. C) 7. D) 2. Show Answer Correct Answer: C) 7. 36. If white light shines on a green object A) It will reflect green light and absorb red and blue light. B) It will reflect Blue light and absorb red and green light. C) It will reflect red light and absorb green and blue light. D) It will reflect green and blue light and absorb red light. Show Answer Correct Answer: A) It will reflect green light and absorb red and blue light. 37. Growing more trees can increase noise pollution. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 38. Which side of a plane mirror, you will face, to see yourself? A) Polished surface. B) Reflecting surface. C) All the above. D) None of the above. Show Answer Correct Answer: B) Reflecting surface. 39. A converging lens has focal length of 15 cm. At what distance should the object be placed from the lens so that it forms an image at 30 cm from the lens A) -30 cm. B) + 30 cm. C) -60 cm. D) + 60 cm. Show Answer Correct Answer: A) -30 cm. 40. Type of mirror that can produce a virtual image ..... A) Plane. B) Convex. C) Concave. D) All of the above. Show Answer Correct Answer: D) All of the above. 41. The path of the light is A) Curved. B) Depends on the medium. C) A zig-zag line. D) Always a straight line. Show Answer Correct Answer: D) Always a straight line. 42. If a material transmits light, it is called transparent. A) True. B) Only on Mars. C) Sunlight does not do this. D) False. Show Answer Correct Answer: A) True. 43. Real images are always A) Erect. B) Inverted. C) Laterally inverted. D) Both b and c. Show Answer Correct Answer: B) Inverted. 44. 9) Power of the lens is-40, its focal length is: A) 4 m. B) -0.25 m. C) -25 m. D) -40 m. Show Answer Correct Answer: B) -0.25 m. 45. This type of object lets some light through, but not all. It is not easy to see through this type of material. A) Transparent. B) Translucent. C) Opaque. D) Co-paid. Show Answer Correct Answer: B) Translucent. 46. If light falls perpendicularly on a plane mirror, what will be the angle in which it will be reflected? A) 360 degrees. B) 90 degrees. C) 45 degrees. D) 180 degrees. Show Answer Correct Answer: B) 90 degrees. 47. Light travels in ..... lines. A) Directions. B) Space. C) Straight. D) Bounces. Show Answer Correct Answer: C) Straight. 48. What is the approximate speed of light in vaccum in km/s? A) Three million. B) Three lakh. C) Three crore. D) Three thousand. Show Answer Correct Answer: B) Three lakh. 49. Which mirror has a wider field of view? A) Convex. B) Concave. C) Plane. D) None. Show Answer Correct Answer: A) Convex. 50. Light that humans can see is called the ..... spectrum. A) Ultraviolet. B) Infrared. C) Visible. D) Gamma ray. Show Answer Correct Answer: C) Visible. 51. Light behaves like both a particle and a ..... A) Mass. B) Wave. C) Current. D) None of the above. Show Answer Correct Answer: B) Wave. 52. You walk into a dark room. You need to be able to see. What can you do? A) Turn on a radio. B) Turn on a fan. C) Turn on a light. D) None of the above. Show Answer Correct Answer: C) Turn on a light. 53. A material that can transmit light waves. A) Opaque. B) Transparent. C) Translucent. D) None of the above. Show Answer Correct Answer: B) Transparent. 54. Where does light reactions take place? A) Stroma. B) Thylakoid. C) Cytoplasm. D) None of the above. Show Answer Correct Answer: B) Thylakoid. 55. Looking directly into a mirror you see yourself. What property does this demonstrate? A) Reflection. B) Translucence. C) Refraction. D) Absorption. Show Answer Correct Answer: A) Reflection. 56. Angle of incidence is always A) Equal to angle of refraction. B) Equal to angle of reflection. C) More than angle of reflection. D) Less than refraction. Show Answer Correct Answer: B) Equal to angle of reflection. 57. Light years are a unit of what? A) Time. B) Distance. C) Luminous intensity. D) Speed. Show Answer Correct Answer: B) Distance. 58. A ..... lens makes objects appear smaller and further away. A) Prism. B) Convex. C) Flat. D) Concave. Show Answer Correct Answer: D) Concave. 59. An image being in such a position that top and bottom are reversed is: A) Concave. B) Erect. C) Inverted. D) Virtual. Show Answer Correct Answer: B) Erect. 60. If red light shines on a green object A) It will appear red. B) It will appear black. C) It will appear green. D) It will appear blue. Show Answer Correct Answer: B) It will appear 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books