This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following lenses would you prefer to use while reading small letters of newspaper? A) A convex lens of focal length 50 cm. B) A concave lens of focal length 5 cm. C) A concave lens of focal length 50 cm. D) A convex lens of focal length 5 cm. Show Answer Correct Answer: D) A convex lens of focal length 5 cm. 2. How many images are formed when two plane mirrors are kept parallel to each other. A) 3 Images. B) 2 Images. C) 1 Images. D) Infinite Images. Show Answer Correct Answer: D) Infinite Images. 3. Position of reflection when the object is placed in 2f in front of convex mirror A) At f. B) At 2f. C) Beyond 2F. D) F and between 2f. Show Answer Correct Answer: B) At 2f. 4. Pinhole camera is based on the ..... A) Rectilinear propagation of light. B) Rectangular propagation of light. C) Circular propagation of light. D) None of these. Show Answer Correct Answer: A) Rectilinear propagation of light. 5. ..... is a from of energy that we can see with our eyes. A) Shadow. B) Light. C) Energy. D) Reflection. Show Answer Correct Answer: B) Light. 6. What was Ibn-al-Haytham most important discovery? A) Light travels in straight lines and enters our eyes. B) We can see because light enters our eyes and bounces back. C) Light can be reflected. D) None of the above. Show Answer Correct Answer: A) Light travels in straight lines and enters our eyes. 7. How many G3P is needed to convert to a one molecule of glucose? A) 1. B) 2. C) 3. D) 4. E) 5. Show Answer Correct Answer: B) 2. 8. A ray of light is the path along which light travels A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Which object would reflect the most light? A) A polished metal knife. B) A cricket bat. C) A rusty tin. D) A blue sheet of paper. Show Answer Correct Answer: A) A polished metal knife. 10. Far point of human eye is A) 50 cm. B) 25 cm. C) Infinite. D) 52 cm. Show Answer Correct Answer: C) Infinite. 11. 1 ) Which Colour has the longest wavelength? A) A ) Violet. B) B ) Red. C) C ) Blue. D) D ) Green. Show Answer Correct Answer: B) B ) Red. 12. The windows that you can easily see through is transparent. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 13. The image formed by spherical mirror is virtual. The mirror will be A) Concave. B) Convex. C) Either concave or convex. D) None of these. Show Answer Correct Answer: C) Either concave or convex. 14. ..... cell sense colours in retina A) Rods. B) Cones. C) Both a and b. D) Optic nerve. Show Answer Correct Answer: B) Cones. 15. When light is reflected it ..... A) Slows down. B) Bounces back. C) Bends in many directions. D) Stops. Show Answer Correct Answer: B) Bounces back. 16. A material that DOES NOT allow light to pass through it. A) Opaque. B) Translucent. C) Transparent. D) Prism. Show Answer Correct Answer: A) Opaque. 17. Light is ..... A) How we hear things. B) Always reflected. C) A form of energy. D) All of the above. Show Answer Correct Answer: C) A form of energy. 18. Objects that reflect ALL colors will appear ..... ? A) Black. B) White. C) Gray. D) Multi-colored. Show Answer Correct Answer: B) White. 19. Which material is transparent? A) Clear glass. B) Tissue paper. C) Shoe. D) Wax paper. Show Answer Correct Answer: A) Clear glass. 20. Used to cook with A) Infrared. B) Radio. C) Microwaves. D) Ultraviolet (UV). E) X-Rays. Show Answer Correct Answer: C) Microwaves. 21. When the left side of an object appears as the right side of the image and vice versa, this phenomenon is called A) Literally inversion. B) Lateral Invasion. C) Lateral Inversion. D) Literally Invasion. Show Answer Correct Answer: C) Lateral Inversion. 22. Convex lens is also known as A) Converging lens. B) Diverging lens. C) Radial lens. D) Axial lens. Show Answer Correct Answer: A) Converging lens. 23. What is a way of changing direction of light A) Reflection. B) Refraction. C) Dispersion. D) I do not know. Show Answer Correct Answer: A) Reflection. 24. A window is opaque which means it stops all light A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 25. ..... is a mid point of the pole and the centre of the curvature. A) Focus. B) Centre. C) Focal length. D) Radius of creature. Show Answer Correct Answer: A) Focus. ← 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