This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 47 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 47 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Red from the color spectrum has the longest wavelength. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 2. Which of the following light color is absorbed by plants? A) Red. B) Green. C) Yellow. D) Light green. Show Answer Correct Answer: A) Red. 3. ..... eclipse takes place when Earth comes in between Sun and Moon A) Solar. B) Lunar. C) All the above. D) None of the above. Show Answer Correct Answer: B) Lunar. 4. Light cannot go around ..... ? A) Corners. B) Bends. C) A wall. D) All of the above. Show Answer Correct Answer: D) All of the above. 5. In torches, search lights and headlights of vehicles the bulb is placed A) Between the pole and the focus of the reflector. B) Very near to the focus of the reflector. C) Between the focus and centre of curvature of the reflector. D) At the centre of curvature of the reflector. Show Answer Correct Answer: B) Very near to the focus of the reflector. 6. If an object is placed at a distance of 10 cm in front of a plane mirror how far would it be from its image. A) 10cm. B) 20cm. C) 30cm. D) 40cm. Show Answer Correct Answer: B) 20cm. 7. When an obj is placed at focus then which type of image is formed? A) Real. B) Virtual. C) Inverted. D) Both (1)and (3). Show Answer Correct Answer: D) Both (1)and (3). 8. There is a lot of sunlight. So, you pull the curtains and the room becomes slightly dark. This happens because the curtains are ..... A) Transparent. B) Opaque. C) Translucent. D) None of the given options. Show Answer Correct Answer: C) Translucent. 9. Calculate the power of a lens whose focal length is +40 cm. Also Identify the nature of the lens. A) P = +0.25 DConcave lens. B) P = +2.5 DConvex lens. C) P = +0.25 DConcave lens. D) P = +2.5 DConvex Lens. Show Answer Correct Answer: B) P = +2.5 DConvex lens. 10. A person 1.7 m in front of a plane mirror seems to be ..... m from his image. A) 1.7 m. B) 3.4 m. C) 34 m. D) 17 m. Show Answer Correct Answer: B) 3.4 m. 11. Produces glucose. Light independent or light dependent stage? A) Light independent stage. B) Light dependent stage. C) All the above. D) None of the above. Show Answer Correct Answer: A) Light independent stage. 12. Which lens is known as diverging lenses A) Concave lens. B) Convex lens. C) All the above. D) None of the above. Show Answer Correct Answer: A) Concave lens. 13. Which material can light travel through, but scatters in different directions? A) Refraction. B) Transparent. C) Opaque. D) Translucent. Show Answer Correct Answer: D) Translucent. 14. If you are in a dark room, which source of light will appear the brightest to you? A) A candle on the table in front of you. B) Car lights outside. C) The lights next door. D) A flashlight shining down the hallway. Show Answer Correct Answer: A) A candle on the table in front of you. 15. Ground Glass is the example of A) Transparent Objects. B) Translucent Objects. C) Opaque Objects. D) None of the above. Show Answer Correct Answer: B) Translucent Objects. 16. Which mirror forms always a virtual image and same size as an object. A) Concave. B) Convex. C) Plane. D) Converging. Show Answer Correct Answer: C) Plane. 17. A lens that curves outward A) Concave. B) Convex. C) All the above. D) None of the above. Show Answer Correct Answer: B) Convex. 18. The image of a candle flame placed at a distance of 30cm from a mirror is formed on a screen placed in front of the mirror at a distance of 60cm from its pole. What is the nature of the mirror? Find its focal length. A) F =-20 cmConcave MirrorReal & Inverted Image. B) F = + 20 cmConcave MirrorVirtual & Erect Image. C) F =-20 cmConvex MirrorReal & Inverted Image. D) F = + 20 cmConvex MirrorVirtual & Erect Image. Show Answer Correct Answer: A) F =-20 cmConcave MirrorReal & Inverted Image. 19. The change of right side to left side and left side to right side in the mirror is called ..... A) Lateral Opposition. B) Words Inversion. C) Lateral Inversion. D) None of these. Show Answer Correct Answer: C) Lateral Inversion. 20. The mirror in which outer surface (bulged surface) is coated is called A) Convex mirror. B) Concave mirror. C) Plane mirror. D) Convex lens. Show Answer Correct Answer: B) Concave mirror. 21. To make a plane mirror, a thin piece of glass is taken and coated with a layer of ..... on it's back A) Gold. B) Metal. C) Silver. D) Bronze. Show Answer Correct Answer: C) Silver. 22. What is a prism used for? A) To enhance the brightness of colors. B) To measure the temperature of liquids. C) To create a solid shape for storage. D) To refract light and separate it into colors. Show Answer Correct Answer: D) To refract light and separate it into colors. 23. Which is more powerful A) Gamma rays. B) Radio waves. C) Infra red. D) Visible light. Show Answer Correct Answer: A) Gamma rays. 24. Transfer of light energy to matter. A) Absorption. B) Reflection. C) Refraction. D) Scattering. Show Answer Correct Answer: A) Absorption. 25. Which of the following angles between two mounted plane mirrors will give more images? A) 30$^\circ$. B) 60$^\circ$. C) 90$^\circ$. D) 180$^\circ$. Show Answer Correct Answer: A) 30$^\circ$. ← 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