This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 38 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 38 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The moon is a natural source of light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 2. Which of the following objects does not have light of its own? A) Moon. B) Sun. C) Star. D) Jelly fish. Show Answer Correct Answer: A) Moon. 3. The color of an object is the color/s of white light being ..... by the object. A) Absorbed. B) Reflected. C) Transmitted. D) None of the above. Show Answer Correct Answer: B) Reflected. 4. Convex lens merges thr light rays passing through it at a certain point. therefore it is also called ..... A) Convexing lens. B) Converging lens. C) Diverging lens. D) Reflector lens. Show Answer Correct Answer: B) Converging lens. 5. The splitting of white light into its constituent colours is called A) Lateral. B) Mirror. C) Dispersion. D) Natural. Show Answer Correct Answer: C) Dispersion. 6. The unit of measuring luminous intensity A) Lumens. B) Candela. C) Lux. D) None of the above. Show Answer Correct Answer: B) Candela. 7. You are standing on the bank of a river watching the flowing water. You find some fishes swimming along. You are able to see the fishes because the water is ..... A) Transparent. B) Opaque. C) Dirty. D) Translucent. Show Answer Correct Answer: A) Transparent. 8. IdeaPad Slim 3/3i is available in which if these 3 colors mentioned below? A) Abyss blue/Business Black/Platinum Grey. B) Business Black/Lava Red/PLatinum Grey. C) Abyss Blue/Business Black/Rose Gold. D) None of the above is correct. Show Answer Correct Answer: A) Abyss blue/Business Black/Platinum Grey. 9. The image formed when reflected rays only appear to meet but do not actually meet is A) Real. B) Virtual. C) Inverted. D) Vertical. Show Answer Correct Answer: B) Virtual. 10. PROPERTY OF LIGHT TRAVELLING IN STRAIGHT LINES IS CALLED A) RECTILINEAR PROPAGATION. B) BENDING PROPAGATION. C) PARTIAL PROPAGATION. D) None of the above. Show Answer Correct Answer: A) RECTILINEAR PROPAGATION. 11. A material that allows some light to transmit through, but also absorbs some light A) Transparent. B) Translucent. C) Opaque. D) Solid. Show Answer Correct Answer: B) Translucent. 12. Power of lens is + 4.5 D, it's focal length and the type of lens is A) + 0.22m, convex lens. B) -0. 22 m, concave lens. C) + 2 m, convex lens. D) -2 m, concave lens. Show Answer Correct Answer: A) + 0.22m, convex lens. 13. Both magnified as well as diminished images can be produced using A) Concave lens. B) Convex lens. C) Concave mirror. D) Convex mirror. Show Answer Correct Answer: B) Convex lens. 14. At the junction of the optic nerve and the retina, there are no sensory cells, so no vision is visible at the spot, it is ..... A) Cornea. B) Blind spot. C) Sensory nerve. D) Retina. Show Answer Correct Answer: B) Blind spot. 15. Absorption of light occurs best with: A) Mirrors. B) Light surfaces. C) Medium surfaces. D) Dark surfaces. Show Answer Correct Answer: D) Dark surfaces. 16. Band of seven colours is called ..... A) Fiber. B) Spectrum. C) Dispersion. D) Reflection. Show Answer Correct Answer: B) Spectrum. 17. Which of the following best describes the radiation our planet receives from the Sun? A) All the radiation is infrared radiation. B) The radiation is in many different wavelengths. C) All the radiation is ultraviolet radiation. D) The radiation includes all wavelengths except visible light. Show Answer Correct Answer: B) The radiation is in many different wavelengths. 18. Jagriti is drinking a glass of appy. She looks through the glass and the objects behind it look fuzzy. This is because the appy is. A) Opaque. B) Translucent. C) Transparent. D) None of the above. Show Answer Correct Answer: B) Translucent. 19. The image formed by a plane mirror is A) Real, at the surface of the mirror and enlarged. B) Real, at the surface of the mirror and the same size as the object. C) Virtual, behind the mirror and enlarged. D) Virtual, behind the mirror and the same size as the object. Show Answer Correct Answer: D) Virtual, behind the mirror and the same size as the object. 20. If the angle of incidence is 45 degree, what is the angle between the reflected ray and the normal A) 45. B) 90. C) 180. D) None of the above. Show Answer Correct Answer: A) 45. 21. Why are convex mirrors used in cars? A) Because they provide a wider field of view compared to plain mirrors. B) Because they are cheaper and easier to manufacture. C) Because they enlarge the vehicles behind, causing them to be observed more clearly. D) All of the above. Show Answer Correct Answer: A) Because they provide a wider field of view compared to plain mirrors. 22. Is Visible Light Dangerous? A) No, Visible light cannot harm you. B) Yes, visible light is highly radioactive and should be handled carefully. Visible light when in contact with human skin can cause aerial skin cancer. C) No, this is because visible light isn't real. D) Yes, Visible light at high concentrations can cause burns, blindness, and indirect DNA damage but at low levels is harmless. Show Answer Correct Answer: D) Yes, Visible light at high concentrations can cause burns, blindness, and indirect DNA damage but at low levels is harmless. 23. Electric and magnetic fields produce A) Electricity. B) Magnets. C) Longitudinal waves. D) Light. Show Answer Correct Answer: D) Light. 24. From where to draw the normal line to the point of incident, in case of spherical mirrors. A) From C. B) From F. C) From infinity. D) From P. Show Answer Correct Answer: A) From C. 25. Moon is an example for ..... object A) Transparent. B) Opaque. C) Translucent. D) None of the above. Show Answer Correct Answer: B) Opaque. ← 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