This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 23 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The point of intersection of Incident ray and Reflected ray is A) Normal line. B) Plane. C) Principal axis. D) Abnormal line. Show Answer Correct Answer: A) Normal line. 2. The primary colors of LIGHT are: A) Red, yellow, blue. B) Yellow, cyan, magenta. C) Red, green, and blue. D) Red, orange, yellow, green, blue, violet. Show Answer Correct Answer: C) Red, green, and blue. 3. Sun is a natural source of light A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Meaning of absorb in light A) A solid material that blocks light and creates shadows. B) To pass through a substance. C) A material that light can travel through. D) To soak up. Show Answer Correct Answer: D) To soak up. 5. Choose the right option A) With a sorce of light we can not see. B) We can see with out a sorce of light. C) Non of the above. D) None of the above. Show Answer Correct Answer: A) With a sorce of light we can not see. 6. When an object blocks light, you get A) An eclipse. B) A surprise. C) A shadow. D) Darkness. Show Answer Correct Answer: C) A shadow. 7. Which point in the spherical mirror converges all the light beams that are parallel to principal axis. A) Focal Length. B) Focus. C) Centre of Curvature. D) None of these. Show Answer Correct Answer: B) Focus. 8. A student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen moves the lens: A) Away from screen. B) Towards the screen. C) To a position very far away from the screen. D) Either towards or away from the screen. Show Answer Correct Answer: B) Towards the screen. 9. What is NOT the product of light dependent reaction? A) ATP. B) NADPH. C) H2O. D) O2. Show Answer Correct Answer: C) H2O. 10. If the image can not be taken in the screen, it must be A) Real. B) Unreal. C) Virtual. D) None of these. Show Answer Correct Answer: C) Virtual. 11. Identify translucent material from the following. A) Thin sheet. B) Brick wall. C) Clean water. D) Mirror. Show Answer Correct Answer: A) Thin sheet. 12. As the distance of the object from the mirror increases the distance of the image also increases A) True. B) False. C) Both. D) None. Show Answer Correct Answer: A) True. 13. The refractive index of glass is 1.50, then the speed of light in glass Will be A) 6 X 10 power of 8 ms-1. B) 4 X 10 power of 8 ms-1. C) 2 X 10 power of 8 ms-1. D) 1 X 10 power of 8 ms-1. Show Answer Correct Answer: C) 2 X 10 power of 8 ms-1. 14. Speed of light is A) 3X10 m/s. B) 3X10$^{8 }$m/s. C) 3X10$^{5 }$m/s. D) 3X10$^{10 }$m/s. Show Answer Correct Answer: B) 3X10$^{8 }$m/s. 15. Solar eclipse lasts for A) 5-10 minutes. B) An hour. C) 25 seconds. D) None of the above. Show Answer Correct Answer: A) 5-10 minutes. 16. A lemon appears yellow when light is shone on it because the lemon ..... yellow light. A) Bends. B) Refracts. C) Absorbs. D) Reflects. Show Answer Correct Answer: D) Reflects. 17. To identify the amplitude in a longitudinal wave, you would measure areas of A) Reflection. B) Compression. C) Crests. D) Refraction. Show Answer Correct Answer: B) Compression. 18. Reflection is: A) Absorption of light rays by the surface of an object. B) Passing of light rays through the surface of an object. C) Bouncing back of light rays from the surface of an object. D) None of these. Show Answer Correct Answer: C) Bouncing back of light rays from the surface of an object. 19. In the evening sunlight travels trough a lot of air. The blue light ..... , leaving only redder light. A) Absorbs. B) Reflects. C) Refracts. D) Scatters. Show Answer Correct Answer: D) Scatters. 20. What happens when light transitions into a new medium? A) Reflection. B) Absorbing. C) Refraction. D) Mirror. Show Answer Correct Answer: C) Refraction. 21. Which would reflect light rather than bend it? A) Magnifying glass. B) Crystal. C) Prism. D) Mirror. Show Answer Correct Answer: D) Mirror. 22. Splitting of light into its colours is known as ..... of light A) Fiber. B) Spectrum. C) Rainbow. D) Dispersion. Show Answer Correct Answer: D) Dispersion. 23. 3) A ray of light that strikes a plane mirror PQ at an angle of incidence of 30 degree, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is: A) 90 degree. B) 30 degree. C) 180 degree. D) 60 degree. Show Answer Correct Answer: D) 60 degree. 24. The bouncing of light off an object is ..... A) A mirror. B) Absorption. C) Reflection. D) Refraction. Show Answer Correct Answer: C) Reflection. 25. A convex mirror is used A) By a dentist. B) For shaving. C) As a rear view mirror. D) Light reflector. Show Answer Correct Answer: C) As a rear view mirror. ← 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