This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the source of natural light? A) The moon. B) Artificial lights. C) The sun. D) Fireflies. Show Answer Correct Answer: C) The sun. 2. Number of images formed when two mirrors are placed 45 degree to each other A) 3. B) 5. C) 7. D) Infinite. Show Answer Correct Answer: C) 7. 3. The part of shadow where no light reaches is known as A) PENUMBRA. B) NOT SURE. C) UMBRA. D) None of the above. Show Answer Correct Answer: C) UMBRA. 4. Which of these types of light have the lowest energy? A) Red. B) Yellow. C) Blue. D) Violet. Show Answer Correct Answer: A) Red. 5. Which is NOT a way a person would use the word reflect when describing light ENERGY? A) Tamatoa's shiny shell reflects more than dull objects. B) Reflect on your decision to make good choices. C) A cell phone can reflect our image back to us if the screen is blank. D) The light will reflect in different directions. Show Answer Correct Answer: B) Reflect on your decision to make good choices. 6. What is NOT one of the 3 main types of mediums? A) Solid. B) Liquid. C) Plastic. D) Gas. Show Answer Correct Answer: C) Plastic. 7. An important property of light is that it travels in a ..... line A) Straight. B) Curved. C) All the above. D) None of the above. Show Answer Correct Answer: A) Straight. 8. An object, which we can see partially, but not very clearly, is A) A sheet of plane glass. B) A rubber ball. C) A sheet of tracing paper. D) Air. Show Answer Correct Answer: C) A sheet of tracing paper. 9. How does the light travels? A) In parallel. B) In a straight line. C) On its own orbit. D) On its own path. Show Answer Correct Answer: B) In a straight line. 10. Which Of the following is opeque?? A) Water. B) Glass. C) Mirror. D) Prism. Show Answer Correct Answer: C) Mirror. 11. All the colors that we observed in an object are ..... colors. A) Absorbed. B) Reflected. C) Transmitted. D) Scattered. Show Answer Correct Answer: B) Reflected. 12. Which sensory cells are are sensitive to bright light and can detect colour? A) Rods. B) Cones. C) All the above. D) None of the above. Show Answer Correct Answer: B) Cones. 13. Used to "see" inside the body, for instance to tell if a bone is broken A) Infrared. B) Radio. C) Microwaves. D) Ultraviolet (UV). E) X-Rays. Show Answer Correct Answer: E) X-Rays. 14. A transparent object lets ..... light through than a translucent object. A) More. B) Less. C) All the above. D) None of the above. Show Answer Correct Answer: A) More. 15. Absolute refractive index of any medium is always ..... A) Less than 1. B) Greater than 1. C) 1. D) 0. Show Answer Correct Answer: B) Greater than 1. 16. The number of images formed when of an object placed between two plane mirrors inclined at right angles to each other is A) Two. B) Five. C) One. D) Three. Show Answer Correct Answer: D) Three. 17. Light refracts when traveling from air into glass because light A) Travels at the same speed in air and in glass. B) Frequency is greater in air than in glass. C) Frequency is greater in glass than in air. D) Travels slower in glass than in air. Show Answer Correct Answer: D) Travels slower in glass than in air. 18. A perfect black body will A) Reflect all incident light and not absorb or transmit any of it. B) Absorb some incident light and reflect or transmit the rest. C) Absorb all incident light and not reflect or transmit any of it. D) Transmit all incident light and not absorb or reflect any of it. Show Answer Correct Answer: C) Absorb all incident light and not reflect or transmit any of it. 19. Can we see through all things? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 20. Luminous means ..... A) Gives out its own light. B) Reflects light from other things. C) All the above. D) None of the above. Show Answer Correct Answer: A) Gives out its own light. 21. A stick in water appears broken due to ..... A) Reflection of light. B) Refraction of light. C) Total internal reflection. D) Dispersion of light. Show Answer Correct Answer: B) Refraction of light. 22. Sometimes waves, (sound waves) can bend around a barrier like a wall. This type of bending is called ..... A) Rebound. B) Differaction. C) Absorption. D) Reflection. Show Answer Correct Answer: B) Differaction. 23. White light is made up of: A) Red, yellow, and blue. B) No colors. C) All colors. D) Red, green, and blue. Show Answer Correct Answer: C) All colors. 24. 'Light always travels in a straight line'What is the name of this property? A) Rectilinear propagation of light. B) Conservation of light energy. C) Straight propagation of light. D) None of the above. Show Answer Correct Answer: A) Rectilinear propagation of light. 25. A person 1m in front of a plane mirror seems to be ..... m away from his image. A) 1m. B) Or. C) Paternal uncle. D) World Cup. Show Answer Correct Answer: B) Or. ← 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