This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 11 Light – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 49 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A convex mirror used for rear view on an automobile has a radius of curvature of 3 m. If a bus is located at 5 m from this mirror. Find out the position, nature and size of the image. A) V =-1.15 mm =-0.23Virtual & Erect. B) V =-1.5 mm = + 0.23Real & Inverted. C) V = + 1.5 mm = + 2.3Real & Inverted. D) V = + 1.15 mm = + 0.23Virtual & Erect. Show Answer Correct Answer: D) V = + 1.15 mm = + 0.23Virtual & Erect. 2. The places that fall under the umbral region, during a solar eclipse experiences a A) Total solar eclipse. B) Partial solar eclipse. C) All the above. D) None of the above. Show Answer Correct Answer: A) Total solar eclipse. 3. Which pairs of colors of pigment combine to make black? A) Green and magenta. B) Red and cyan. C) Yellow and blue. D) All of the above. Show Answer Correct Answer: D) All of the above. 4. The process of separating the colors of white light using a prism. A) Reflection. B) Interference. C) Dispersion. D) Diffraction. Show Answer Correct Answer: C) Dispersion. 5. Which is not an example of artificial light? A) Light bulbs. B) Flashlight. C) Stars. D) T.V. Show Answer Correct Answer: C) Stars. 6. Which of these is a source of light? A) A firefly. B) A drinking glass. C) Trees. D) The whiteboard. Show Answer Correct Answer: A) A firefly. 7. AN image formed on a screen is called as: A) Virtual image. B) Erect image. C) Real image. D) None of the above. Show Answer Correct Answer: C) Real image. 8. Which would you rather walk on barefoot if the sun is out all day long? A) Grass. B) Black top. C) Sand at the beach. D) Concrete sidewalk. Show Answer Correct Answer: A) Grass. 9. Who invented the Braille system? A) Helen Keller. B) Galileo Galilei. C) Alexandro Wolta. D) Louis Braille. Show Answer Correct Answer: D) Louis Braille. 10. Mirror reflection gives a ..... image. A) Clear. B) Dim. C) Dotted. D) Different. Show Answer Correct Answer: A) Clear. 11. Because we know that light with shorter waves and higher frequency has more energy, looking at the chart of visible light, which color should have the most energy? A) Purple light(violet). B) Orange light. C) Red light. D) Not light has energy. Show Answer Correct Answer: A) Purple light(violet). 12. Soak up A) Absorb. B) Reflect. C) Refract. D) None of the above. Show Answer Correct Answer: A) Absorb. 13. A shadow is always black in colour. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. Where does dark reaction or light independent specifically occur? A) Thylakoid membrane. B) Stroma of the chloroplast. C) Grana. D) Nuclear membrane. Show Answer Correct Answer: B) Stroma of the chloroplast. 15. Convex Mirrors produce ..... A) Only virtual images. B) Virtual or real images. C) Only real images. D) Inverted images. Show Answer Correct Answer: A) Only virtual images. 16. What does NADPH do? A) Carries electrons to the Calvin cycle. B) Carries electrons to the ETC. C) All the above. D) None of the above. Show Answer Correct Answer: A) Carries electrons to the Calvin cycle. 17. The linear magnification produced by a spherical mirror is +3. Which of the following is correct? A) Image formed is real and inverted. B) Convex mirror is used. C) Image formed is virtual and enlarged. D) Image formed is in front of the mirror. Show Answer Correct Answer: C) Image formed is virtual and enlarged. 18. Because the light beam moves away from the vertical when the light moves from the compact media to the sparse media A) The light speed is slowed down. B) Does not change in the speed of light. C) The speed of light increases. D) The speed of light is often reduced after. Show Answer Correct Answer: C) The speed of light increases. 19. Does not require light to occur. 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. 20. We can see objects because of ..... A) Reflection. B) Refraction. C) Transmission. D) Diffraction. Show Answer Correct Answer: A) Reflection. 21. What type of image is formed by pinhole camera A) UNREAL. B) NONE. C) REAL. D) BOTH REAL AND UNREAL. Show Answer Correct Answer: C) REAL. 22. Number of images formed when an object is placed between two mirrors at 90 degree to each other A) 2. B) 3. C) 4. D) None. Show Answer Correct Answer: B) 3. 23. Which of the following rectangular glass slabs made from same material produces the largest lateral shift when a ray of light is incident at the same angle? A) 15 cm x 9 cm. B) 15 cm x 10 cm. C) 15 cm x 11 cm. D) 15 cm x 12 cm. Show Answer Correct Answer: D) 15 cm x 12 cm. 24. What color has the shortest wavelength, or the highest frequency? A) Yellow. B) Blue. C) Red. D) Violet. Show Answer Correct Answer: D) Violet. 25. An object is positioned between a concave mirror's center of curvature and its focal point. The image produced by the mirror is located A) Beyond the center of curvature. B) At the center of curvature. C) Between the center of curvature and the focal point. D) At the focal point. Show Answer Correct Answer: A) Beyond the center of curvature. ← 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