This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Assertion:Keeping a point object fixed, if a plane mirror is moved, the position of its image does not move. Reason:In a plane mirror, distance between the object and mirror is always equal to the distance between the image and the mirror. A) Both (A) and (R) are true and (R) is the correct explanationofthe(A). B) Both(A)and(R)aretrue, but(R)isnotthecorrect explanationofthe(A). C) (A)istrue, but(R)isfalse. D) (A)isfalse, but(R)istrue. Show Answer Correct Answer: D) (A)isfalse, but(R)istrue. 2. Light bounces when it strikes a smooth and/or lustrous surface A) Reflected. B) Absorbed. C) Refracted. D) None of the above. Show Answer Correct Answer: A) Reflected. 3. Name of the equipment used to separate white light A) Lens. B) Prism. C) Filter. D) Mirror. Show Answer Correct Answer: B) Prism. 4. An object is kept at a distance of 4m in front of a spherical mirror, which forms its erect image at a distance of 1m from the mirror. What is the magnification? Is the mirror concave or convex? A) M = +4Concave Mirror. B) M =-4Convex mirror. C) M =-1/4Convex Mirror. D) M = +1/4Convex Mirror. Show Answer Correct Answer: D) M = +1/4Convex Mirror. 5. Focal length of a plane mirror is A) Zero. B) 25 cm. C) -100 cm. D) Infinity. Show Answer Correct Answer: D) Infinity. 6. Which statement is true for the reflection of light? A) The angle of incidence and reflection are equal. B) The reflected light is less bright than the incident light. C) The sum of angle of incidence and reflection is always greater than 900. D) The beams of incident light after reflection diverge at unequal angles. Show Answer Correct Answer: A) The angle of incidence and reflection are equal. 7. White light is a mixture of ..... A) Seven colours. B) Nine colours. C) Six colours. D) Eight colours. Show Answer Correct Answer: A) Seven colours. 8. In which case a shadow is not formed? A) Light falls on opaque object. B) Light falls on translucent object. C) Screen is far away. D) None. Show Answer Correct Answer: C) Screen is far away. 9. ..... -the angle between the normal and the incident ray. A) Angle of incidence. B) Angle of reflection. C) Angle of coincidence. D) Angle of direction. Show Answer Correct Answer: A) Angle of incidence. 10. What is the best description of an opaque material? A) No light passes through the material. B) Some light passes through the material. C) All light passes through the material. D) None of the above. Show Answer Correct Answer: A) No light passes through the material. 11. The third color of white light if they are arranged from longest to shortest wavelength. A) Blue. B) Green. C) Yellow. D) Indigo. Show Answer Correct Answer: C) Yellow. 12. When a Newtons disc is rotated at high speed, the colours of the disc would blend and give A) Black colour. B) White colour. C) No colour. D) Yellow colour. Show Answer Correct Answer: B) White colour. 13. Which of the following lamp types would most likely be used to light a large outdoor sporting event where accurate color rendition and efficiency are both important? A) Halogen. B) Metal Halide. C) Incandescent. D) Low pressure sodium. Show Answer Correct Answer: B) Metal Halide. 14. This object will magnify things close up A) Convex lens. B) Concave lens. C) Prism. D) Translucent. Show Answer Correct Answer: A) Convex lens. 15. Lunar Eclipse Occurs when Sun Moon Earth come in the order ..... A) Sun Moon Earth. B) Earth Moon Sun. C) Sun Earth Moon. D) Moon Earth Sun. Show Answer Correct Answer: C) Sun Earth Moon. 16. Potential Energy is directly proportional to ..... A) Mass and height of the body. B) Mass, height and acceleration due to gravity. C) Height of the body. D) None of these. Show Answer Correct Answer: B) Mass, height and acceleration due to gravity. 17. When light does not reflect or refracts it is taken in by an object A) Absorbs. B) Reflect. C) Refract. D) Opinion. Show Answer Correct Answer: A) Absorbs. 18. *Plants and plant-like organisms make their own food or energy (glucose) from sunlight. A) Chemotrophs. B) Heterotrophs. C) Autotrophs. D) Saprophytes. Show Answer Correct Answer: C) Autotrophs. 19. The image which form in a mirror is called A) Real image. B) Virtual image. C) All the above. D) None of the above. Show Answer Correct Answer: B) Virtual image. 20. Occurs in the stroma (the fluid part of the chloroplast). 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. 21. Change in direction of a wave as it passes from one medium into another at an angle. A) Absorption. B) Reflection. C) Refraction. D) Scattering. Show Answer Correct Answer: C) Refraction. 22. Rainbow colours are denoted as- A) Fiber. B) VBIGYOR. C) Vibgoyr. D) Fiber. Show Answer Correct Answer: A) Fiber. 23. Solar Eclipse occurs when the Earth Sun and Moon come in this order ..... A) Earth Moon Sun. B) Moon Earth Sun. C) Sun Earth Moon. D) Sun Moon Earth. Show Answer Correct Answer: D) Sun Moon Earth. 24. Which has more energy than visible light? A) Microwaves. B) Radio waves. C) Infrared light. D) Gamma rays. Show Answer Correct Answer: D) Gamma rays. 25. A person is blind if ..... A) Cones are absent in his eyes. B) Rods are absent in his eyes. C) Image is formed on blind spot. D) Image is formed on Retina. Show Answer Correct Answer: C) Image is formed on blind spot. ← 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