This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 45 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 45 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A ray of light is incident on a plane mirror at an angle of 30$^\circ$.what is the angle of refrection? A) 10$^\circ$. B) 20$^\circ$. C) 30$^\circ$. D) 40$^\circ$. Show Answer Correct Answer: C) 30$^\circ$. 2. When you look at an object and it appears red, why is that the case? A) It absorbs red light. B) It reflects red light and absorbs all of the other colors of visible light. C) It reflects all of the colors of visible light. D) It reflects all of the colors of visible light except for red light. Show Answer Correct Answer: B) It reflects red light and absorbs all of the other colors of visible light. 3. Refraction occurs best with A) Lenses and water. B) Lenses. C) Water. D) Lenses and gas. Show Answer Correct Answer: A) Lenses and water. 4. Who is Target Audience for IdeaPad Notebooks? A) Trend Setters. B) Elite Customers. C) Design Trend Follower. D) All of the above. Show Answer Correct Answer: C) Design Trend Follower. 5. An erect and enlarged image can be formed by A) Only a convex mirror. B) Only a concave mirror. C) Only a plane mirror. D) Both convex and concave mirrors. Show Answer Correct Answer: B) Only a concave mirror. 6. The taking in of light by a material ..... A) Absorption. B) Reflection. C) Refraction. D) Dark colors. Show Answer Correct Answer: A) Absorption. 7. Water is a reactant. Light dependent or light independent 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. 8. Which of the following is an example of an illuminated object? A) Moon. B) Light bulb. C) Fireflies. D) Stars. Show Answer Correct Answer: A) Moon. 9. What does the rectilinear propagation of light states? A) Light travels in curved lines. B) Light travels at a speed of 3, 00, 000 Km/s. C) Light travels in straight lines. D) Light refracts through a lens. Show Answer Correct Answer: C) Light travels in straight lines. 10. What is the best description of a transparent material? A) No light passes through the material. B) Some light passes through the material. C) All light passes through the material. D) None of the above. Show Answer Correct Answer: C) All light passes through the material. 11. Light travels faster that sound through denser materials. A) True. B) False, it travels more slowly. C) All the above. D) None of the above. Show Answer Correct Answer: B) False, it travels more slowly. 12. Light travels fastest in vacuum with the speed of A) 3x10$^{8}$m/s. B) 3x10$^{-8}$m/s. C) 3x10$^{10}$m/s$^{2}$. D) 3x10$^{10}$m/s. Show Answer Correct Answer: A) 3x10$^{8}$m/s. 13. Light will be reflected in many different directions off of a ..... surface. A) Rough. B) Smooth. C) Flat. D) Mirrored. Show Answer Correct Answer: A) Rough. 14. ..... is an imaginary line that divides a mirror into half. A) Focal point. B) Equator. C) Optical axis. D) Incident angle. Show Answer Correct Answer: C) Optical axis. 15. A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top. A) Plane, convex and concave. B) Convex, concave and plane. C) Concave, plane and convex. D) Convex, plane and concave. Show Answer Correct Answer: C) Concave, plane and convex. 16. The question is about addition of colors (in light) Red+green= (a) A) Cyan. B) A. yellow. C) All the above. D) None of the above. Show Answer Correct Answer: B) A. yellow. 17. Autotrophs (producers) can perform photosynthesis because they have- A) Mitochondria. B) Ribosomes. C) A Nucleus. D) Chloroplasts. Show Answer Correct Answer: D) Chloroplasts. 18. ..... mirrors are used as rear view mirrors in cars. A) Concave. B) Convex. C) Plane. D) None. Show Answer Correct Answer: B) Convex. 19. A material that allows almost all of the light striking it to pass through, and through which objects can be seen clearly A) Transparent. B) Translucent. C) Opaque. D) None of the above. Show Answer Correct Answer: A) Transparent. 20. Fluorescent tube light, incandescent lamp and Neon lamp are examples of Natural Sources of Light A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 21. CHANGING OF DIRECTION OF LIGHT WHEN IT FALLS ON AN OBJECT A) REFLECTION. B) LUMINOUS. C) REFRACTION. D) None of the above. Show Answer Correct Answer: A) REFLECTION. 22. Oxygen gas is a product. Light dependent or light independent 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. 23. The highest point on a wave A) Trough. B) Amplitude. C) Crest. D) Wavelength. Show Answer Correct Answer: C) Crest. 24. The bending of light as it passes from one medium to the other is A) Refraction. B) Reflection. C) Translucent. D) None of the above. Show Answer Correct Answer: A) Refraction. 25. When light travels through two different materials it bends and changesdirection because the speed of light changes. This is called ..... A) Reflection. B) Refraction. C) All the above. D) None of the above. Show Answer Correct Answer: B) Refraction. ← PreviousNext →Related 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 8Class 7 Science Chapter 11 Light Quiz 9Class 7 Science Chapter 11 Light Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books