This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An image obtain on screen is A) Virtual. B) Erect. C) Real. D) Upright. Show Answer Correct Answer: C) Real. 2. In case of reflection of light, the relationship between angle of incidence (i) and the angle of reflection (r) may be expressed as: A) I = r. B) I < r. C) I > r. D) Undetermined. Show Answer Correct Answer: A) I = r. 3. Light passes through glass windows because of ..... A) Absorption. B) Transfusion. C) Transmission. D) Reflection. Show Answer Correct Answer: C) Transmission. 4. Which is a manmade source of light? A) Flashlight. B) Sun. C) Star. D) Fire. Show Answer Correct Answer: A) Flashlight. 5. What type of surface best reflects light? A) Dull. B) Shiny. C) Clear. D) Black. Show Answer Correct Answer: B) Shiny. 6. There are 11 letters in the word 'EXAMINATION'. How many letters of this word are not changed when the word is seen in a plane mirror? A) 9. B) 7. C) 8. D) 6. Show Answer Correct Answer: C) 8. 7. The mirror used by the doctors to examine eyes, nose, ears and throat is:- A) Real. B) Convex. C) Concave. D) Virtual. Show Answer Correct Answer: C) Concave. 8. This object dips in like a bowl A) Convex lens. B) Concave lens. C) Prism. D) Mirror. Show Answer Correct Answer: B) Concave lens. 9. The principal chemical compound that living things use to store energy is A) DNA. B) ATP. C) H$_{2}$O. D) CO$_{2}$. Show Answer Correct Answer: B) ATP. 10. An interesting feature of a ..... is that you will never see the same pattern again. A) Periscope. B) Telescope. C) Kaleidoscope. D) Mirror. Show Answer Correct Answer: C) Kaleidoscope. 11. What can be concluded from the passage about transforming energy from the Sun? A) Technology can be used to transform radiant energy. B) Sunlight cannot be transformed. C) Light moves in compression waves. D) Sunlight is made only from blue light. Show Answer Correct Answer: A) Technology can be used to transform radiant energy. 12. Maggie is observing a tree to see if the length of its shadow will change. Each hour, she traces the shadow outline with chalk. Which of the following would be the LEAST important while making her observations? A) Choosing a tree that gets a good amount of sunlight. B) Measuring the length of the shadows. C) Observing the temperature outside. D) Recording the time each shadow occurs. Show Answer Correct Answer: C) Observing the temperature outside. 13. Can you see objects in the dark? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 14. An image which cannot be obtain on a screen is called a A) Real image. B) Virtual image. C) Erect image. D) None of the above. Show Answer Correct Answer: B) Virtual image. 15. When was the longest solar eclipse of this century seen? A) January 15, 2010. B) March 8, 2014. C) May 9, 2007. D) July 30, 2000. Show Answer Correct Answer: A) January 15, 2010. 16. The method of indicating the amount caused by the change of light direction in relation to the two mediums given A) Rhythmic. B) Refractive index. C) Relative refraction. D) Refraction. Show Answer Correct Answer: B) Refractive index. 17. Light sources A) Emit light. B) Detect light. C) Reflect light. D) None of the above. Show Answer Correct Answer: A) Emit light. 18. *Photosynthesis is a type of anabolic and exergonic reaction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 19. What is reflection? A) Reflection is the bouncing of light off the surface that it strikes on. B) Reflection is the absorbing of light off the surface that it strikes on. C) Reflection is the bending of light off the surface that it strikes on. D) Reflection is the scattering of light off the surface that it strikes on. Show Answer Correct Answer: A) Reflection is the bouncing of light off the surface that it strikes on. 20. Which of the following is not a property of the image formed by a [lane mirror? A) Virtual and erect. B) Object size = image size. C) Object distance = image distance. D) Real and inverted. Show Answer Correct Answer: D) Real and inverted. 21. How are we able to see the color white? A) All colors except red are absorbed. B) All colors are absorbed. C) All colors are reflected. D) All colors except red are reflected. Show Answer Correct Answer: C) All colors are reflected. 22. When distance of object from a mirror is gradually increased then image formed by it becomes inverted which was erect in the beginning. Which type of mirror is this? A) Plane mirror. B) Concave mirror. C) Convex mirror. D) None of the above. Show Answer Correct Answer: B) Concave mirror. 23. Which wavelength of visible light has the lowest energy? A) Red. B) Yellow. C) Orange. D) Blue. Show Answer Correct Answer: A) Red. 24. The ..... is a device that produces beautiful patterns when it is rotated because of the multiple reflection of light. A) Periscope. B) Kaleidoscope. C) Microscope. D) Telescope. Show Answer Correct Answer: B) Kaleidoscope. 25. Our eyes perceive colors because of differences in which of the following properties of light? A) Intensity. B) Wavelength. C) Angle. D) Source. Show Answer Correct Answer: B) Wavelength. ← 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 9Class 7 Science Chapter 11 Light Quiz 10Class 7 Science Chapter 11 Light Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books