This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 31 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 31 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. For refraction to occur, there must be ..... A) 2 transulcent materials. B) 2 transparent materials. C) A shiny surface. D) Water. Show Answer Correct Answer: B) 2 transparent materials. 2. If you are standing 2 m away from a plane mirror, the distance between you and your image is A) 2 m. B) 4 m. C) 6 m. D) 8 m. Show Answer Correct Answer: B) 4 m. 3. Leaves look green because ..... A) They eat their vegetables. B) To blend into their environment. C) They contain a molecule named chlorophyll. D) They are sick. Show Answer Correct Answer: C) They contain a molecule named chlorophyll. 4. Lunar eclipse occurs when ..... A) Pluto;earth;saturn come in a straight line. B) Moon;sun;earth come in a straight line. C) Sun;earth;moon come in a straight line. D) All of these. E) None of these. Show Answer Correct Answer: C) Sun;earth;moon come in a straight line. 5. Which one shows lateral inversion? A) Convex mirror. B) Plane mirror. C) Concave mirror. D) All of these. Show Answer Correct Answer: B) Plane mirror. 6. Refraction is A) Light bending. B) Light bouncing. C) All the above. D) None of the above. Show Answer Correct Answer: A) Light bending. 7. Fireflies and Glow worms are the example of A) Natural Source of Light. B) Artificial source of Light. C) All the above. D) None of the above. Show Answer Correct Answer: A) Natural Source of Light. 8. Mike wants to put a window over his bathtub. Which type of material should he pick to allow light and privacy? A) Tranparent. B) Translucent. C) Opaque. D) Relective. Show Answer Correct Answer: B) Translucent. 9. What word means to bend light rays toward each other? A) Converging light. B) Diverging light. C) Virtual Light. D) Real Light. Show Answer Correct Answer: A) Converging light. 10. The refractive index of four substance P, Q, R and S are 1.30, 1.33, 1.44 and 1.31 respectively. The speed of light is the maximuminthesubstance: A) P. B) Q. C) R. D) S. Show Answer Correct Answer: A) P. 11. The iris is the coloured part of the eye A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Heather puts a straw into a glass of water. She notices that the straw appears to be broken when she looks through the glass and the water from the side. Which term bestexplains why the straw looks like it is broken? A) Absorption. B) Refraction. C) Scattering. D) Transmission. Show Answer Correct Answer: B) Refraction. 13. ....ECLIPSE OCCURS WHEN THE MOON COMES IN BETWEEN THE EARTH AND THE SUN A) LUNAR. B) SOLAR. C) SUN. D) EARTH. Show Answer Correct Answer: B) SOLAR. 14. The plane defined by the incident ray and the normal is known as ..... A) Plane of Incidence. B) Plane of Reflection. C) Plane of Normal. D) None of these. Show Answer Correct Answer: A) Plane of Incidence. 15. Latif wakes up one morning and sees that it is foggy outside. Which term best describes the fog he sees? A) Opaque. B) Reflective. C) Translucent. D) Transparent. Show Answer Correct Answer: C) Translucent. 16. Which term describes when light bounces off of a smooth surface? A) Refraction. B) Transmission. C) Absorption. D) Reflection. Show Answer Correct Answer: D) Reflection. 17. Spherical mirrors do not obey laws of reflection. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. Which of the following is the best example of an object absorbing light? A) A black sweater in the sun. B) A clean window in the sun. C) A curved mirror in the sun. D) A long shadow in the sun. Show Answer Correct Answer: A) A black sweater in the sun. 19. The mirror having reflection surface curved outward A) Plane mirror. B) Concave mirror. C) Convex mirror. D) Cylindrical Mirror. Show Answer Correct Answer: C) Convex mirror. 20. If 'R' is radius of curvature and 'f' is focal length of a spherical mirror then the correct relation between the two is A) R = f. B) R = f/2. C) F = 2R. D) F = R/2. Show Answer Correct Answer: D) F = R/2. 21. Objects allow all light to pass through and are things like glass or clear plastic. A) Transparent. B) Prism. C) Translucent. D) Opaque. Show Answer Correct Answer: A) Transparent. 22. In which order does scientists suggest new ideas and explanations? A) Test, predict, conclude. B) Predict, test, collect evidence and conclude. C) Test, conclude and collect evidence. D) None of the above. Show Answer Correct Answer: B) Predict, test, collect evidence and conclude. 23. Characteristics of shadow are not ..... A) Depends on the colour. B) Depends on the Brightness of a light. C) The angle the light is shone. D) The direction of the light. Show Answer Correct Answer: A) Depends on the colour. 24. Which is not a luminous Object A) Bulb. B) Moon. C) Torch. D) All of these. Show Answer Correct Answer: B) Moon. 25. Light energy that can be seen and can be broken into the colors of light in the rainbow. A) Visible spectrum. B) Wavelength. C) Ray. D) Vibrate. Show Answer Correct Answer: A) Visible spectrum. ← 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