This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Light > Class 7 Science Chapter 11 Light – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 15 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Objects that allow some light to pass through A) Prism. B) Transparent. C) Opaque. D) Translucent. Show Answer Correct Answer: D) Translucent. 2. Thylakoids are arranged in stacks called ..... A) Grain. B) Stroma. C) Glucose. D) Lamellae. Show Answer Correct Answer: A) Grain. 3. The moon is a luminous object A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. Sound can travel through A) On. B) Vacuum. C) Solids. D) Both a) and c). Show Answer Correct Answer: D) Both a) and c). 5. Which of the below statement is true for IdeaPad Slim 5i? A) HD camera with Privacy shutter. B) 1MP Camera with Privacy Shutter. C) 2MP Camera with Privacy Shutter. D) None of the above. Show Answer Correct Answer: B) 1MP Camera with Privacy Shutter. 6. Opaque means ..... A) No light passes through it. B) All light passes through it. C) Some light passes through it. D) None of the above. Show Answer Correct Answer: A) No light passes through it. 7. An object of length 5 cm is placed at a distance of 20 cm in front of a plane mirror. The size and position will be A) 5 cm high and 20 cm behind the mirror. B) 5 cm high and 20 cm in front of mirror. C) 5 cm high and 10 cm behind the mirror. D) 3 cm high and 20 cm behind the mirror. Show Answer Correct Answer: A) 5 cm high and 20 cm behind the mirror. 8. What type of waves does light travel in? A) Transverse. B) Compression. C) High and low waves. D) Waves like the ocean. Show Answer Correct Answer: A) Transverse. 9. The path along which the light travels is called A) Image. B) Speed. C) Ray. D) Energy. Show Answer Correct Answer: C) Ray. 10. Can a glass produce light energy? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 11. A form of energy that you can see is ..... A) Thermal. B) Sound. C) Light. D) Nuclear. Show Answer Correct Answer: C) Light. 12. Material that allows light to pass through allowing you to see "clearly" to the other side A) Opaque. B) Translucent. C) Transparent. D) None of the above. Show Answer Correct Answer: C) Transparent. 13. A concave mirror produces a magnification of +4. The object is placed: A) At the focus. B) Between focus and centre of curvature. C) Between focus and pole. D) Beyond the centre of curvature. Show Answer Correct Answer: C) Between focus and pole. 14. A piece of curved glass, plastic or other material that refracts light. A) Lens. B) Shadow. C) Reflect. D) Refract. Show Answer Correct Answer: A) Lens. 15. Why does light refract? A) Gains energy. B) Speeds up. C) Slows down. D) Gets hot. Show Answer Correct Answer: C) Slows down. 16. If the light has a longer wavelength, it has a lower energy A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 17. Darker colors absorb more light, which is changed into heat and causes an increase in temperature. Lighter colors reflect more light, so they stay cooler. Which of the following roofs would be the warmest on a hot summer day? A) Black roof. B) Grey roof. C) White roof. D) Beige roof. Show Answer Correct Answer: A) Black roof. 18. A convex mirror never produces ..... images. A) Real. B) Enlarged. C) Inverted. D) All are correct. Show Answer Correct Answer: D) All are correct. 19. Which of the following sentences uses the word light, the way a scientist would use the word light when referring to ENERGY? A) Gabby has a smile that can light up any room. B) The students observed the light being refracted in the prism. C) Barbie has light blonde hair. D) Jay studied in light of his science test this week. Show Answer Correct Answer: B) The students observed the light being refracted in the prism. 20. The act of changing its direction when light moves from one transparent media to another transparent media A) Lightness. B) Light refraction. C) Light movement. D) Light reflection. Show Answer Correct Answer: B) Light refraction. 21. Formula to find mirror images is? A) 360/Angle. B) 360/Angle-1. C) Angle/360. D) Angle/360-1. Show Answer Correct Answer: B) 360/Angle-1. 22. The peak of a wave is called as A) Trough. B) Crest. C) All the above. D) None of the above. Show Answer Correct Answer: B) Crest. 23. Opaque materials ..... A) Are clear. B) Create a dark shadow. C) Block all light. D) Creates a dark shadow and blocks all light. Show Answer Correct Answer: D) Creates a dark shadow and blocks all light. 24. How does light travel from a source? A) In a straight line. B) Around corners. C) Very slowly. D) In circles. Show Answer Correct Answer: A) In a straight line. 25. What is the process called when light bounces off a surface? A) Refraction. B) Absorption. C) Diffraction. D) Reflection. Show Answer Correct Answer: D) Reflection. 26. There are how many components of white light? A) 6. B) 7. C) 5. D) 8. Show Answer Correct Answer: B) 7. 27. As the wavelength of light becomes longer, the energy increases. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 28. Meaning of Translucent A) Absorbs all light and makes a shadow. B) Allows light to pass and scatters it. C) Light can pass straight through. D) None of the above. Show Answer Correct Answer: B) Allows light to pass and scatters it. 29. Which colour of light deviates maximum in the dispersion of white light by a prism? A) Violet. B) Green. C) Red. D) Blue. Show Answer Correct Answer: A) Violet. 30. ..... produces light by discharging electricity through a high-pressure vapor. A) Incandescent. B) Halogen. C) High intensity discharge (HID). D) Fluorescent lamp. Show Answer Correct Answer: C) High intensity discharge (HID). 31. Light bends as it travels from air to water. What is the bending of light called? A) Transmission. B) Reflection. C) Absorption. D) Refraction. Show Answer Correct Answer: D) Refraction. 32. Angle of incidence is greater than the angle of reflection. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 33. The moon is a natural source of light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 34. Which of the following objects does not have light of its own? A) Star. B) Moon. C) Sun. D) Jelly fish. Show Answer Correct Answer: B) Moon. 35. OBJECTS WHICH DO NOT EMIT LIGHT OF THEIR OWN ARE CALLED A) NON-LUMINOUS OBJECTS. B) LUMINOUS OBJECTS. C) LIGHT EMITTERS. D) None of the above. Show Answer Correct Answer: A) NON-LUMINOUS OBJECTS. 36. The color of an object is the color/s of white light being ..... by the object. A) Absorbed. B) Reflected. C) Transmitted. D) None of the above. Show Answer Correct Answer: B) Reflected. 37. Convex lens merges thr light rays passing through it at a certain point. therefore it is also called ..... A) Reflector lens. B) Converging lens. C) Diverging lens. D) Convexing lens. Show Answer Correct Answer: B) Converging lens. 38. The splitting of white light into its constituent colours is called A) Lateral. B) Dispersion. C) Mirror. D) Natural. Show Answer Correct Answer: B) Dispersion. 39. The unit of measuring luminous intensity A) Lumens. B) Candela. C) Lux. D) None of the above. Show Answer Correct Answer: B) Candela. 40. You are standing on the bank of a river watching the flowing water. You find some fishes swimming along. You are able to see the fishes because the water is ..... A) Opaque. B) Translucent. C) Dirty. D) Transparent. Show Answer Correct Answer: D) Transparent. 41. IdeaPad Slim 3/3i is available in which if these 3 colors mentioned below? A) Abyss blue/Business Black/Platinum Grey. B) Business Black/Lava Red/PLatinum Grey. C) Abyss Blue/Business Black/Rose Gold. D) None of the above is correct. Show Answer Correct Answer: A) Abyss blue/Business Black/Platinum Grey. 42. The image formed when reflected rays only appear to meet but do not actually meet is A) Real. B) Inverted. C) Virtual. D) Vertical. Show Answer Correct Answer: C) Virtual. 43. PROPERTY OF LIGHT TRAVELLING IN STRAIGHT LINES IS CALLED A) RECTILINEAR PROPAGATION. B) BENDING PROPAGATION. C) PARTIAL PROPAGATION. D) None of the above. Show Answer Correct Answer: A) RECTILINEAR PROPAGATION. 44. A material that allows some light to transmit through, but also absorbs some light A) Opaque. B) Translucent. C) Transparent. D) Solid. Show Answer Correct Answer: B) Translucent. 45. Power of lens is + 4.5 D, it's focal length and the type of lens is A) -0. 22 m, concave lens. B) + 0.22m, convex lens. C) + 2 m, convex lens. D) -2 m, concave lens. Show Answer Correct Answer: B) + 0.22m, convex lens. 46. Both magnified as well as diminished images can be produced using A) Concave lens. B) Convex lens. C) Convex mirror. D) Concave mirror. Show Answer Correct Answer: B) Convex lens. 47. At the junction of the optic nerve and the retina, there are no sensory cells, so no vision is visible at the spot, it is ..... A) Cornea. B) Retina. C) Blind spot. D) Sensory nerve. Show Answer Correct Answer: C) Blind spot. 48. Absorption of light occurs best with: A) Dark surfaces. B) Medium surfaces. C) Mirrors. D) Light surfaces. Show Answer Correct Answer: A) Dark surfaces. 49. Band of seven colours is called ..... A) Dispersion. B) Reflection. C) Spectrum. D) Fiber. Show Answer Correct Answer: C) Spectrum. 50. Which of the following best describes the radiation our planet receives from the Sun? A) All the radiation is infrared radiation. B) The radiation is in many different wavelengths. C) All the radiation is ultraviolet radiation. D) The radiation includes all wavelengths except visible light. Show Answer Correct Answer: B) The radiation is in many different wavelengths. 51. Jagriti is drinking a glass of appy. She looks through the glass and the objects behind it look fuzzy. This is because the appy is. A) Opaque. B) Translucent. C) Transparent. D) None of the above. Show Answer Correct Answer: B) Translucent. 52. The image formed by a plane mirror is A) Real, at the surface of the mirror and enlarged. B) Real, at the surface of the mirror and the same size as the object. C) Virtual, behind the mirror and enlarged. D) Virtual, behind the mirror and the same size as the object. Show Answer Correct Answer: D) Virtual, behind the mirror and the same size as the object. 53. If the angle of incidence is 45 degree, what is the angle between the reflected ray and the normal A) 45. B) 90. C) 180. D) None of the above. Show Answer Correct Answer: A) 45. 54. Why are convex mirrors used in cars? A) Because they provide a wider field of view compared to plain mirrors. B) Because they are cheaper and easier to manufacture. C) Because they enlarge the vehicles behind, causing them to be observed more clearly. D) All of the above. Show Answer Correct Answer: A) Because they provide a wider field of view compared to plain mirrors. 55. Is Visible Light Dangerous? A) No, Visible light cannot harm you. B) Yes, visible light is highly radioactive and should be handled carefully. Visible light when in contact with human skin can cause aerial skin cancer. C) No, this is because visible light isn't real. D) Yes, Visible light at high concentrations can cause burns, blindness, and indirect DNA damage but at low levels is harmless. Show Answer Correct Answer: D) Yes, Visible light at high concentrations can cause burns, blindness, and indirect DNA damage but at low levels is harmless. 56. Electric and magnetic fields produce A) Light. B) Magnets. C) Electricity. D) Longitudinal waves. Show Answer Correct Answer: A) Light. 57. From where to draw the normal line to the point of incident, in case of spherical mirrors. A) From infinity. B) From F. C) From P. D) From C. Show Answer Correct Answer: D) From C. 58. Moon is an example for ..... object A) Transparent. B) Opaque. C) Translucent. D) None of the above. Show Answer Correct Answer: B) Opaque. 59. Light is a type of energy that can be sensed with the A) Ears. B) Eyes. C) Nose. D) None of these. Show Answer Correct Answer: B) Eyes. 60. The radius of curvature of a convex lens is 20cm. What is its focal length? A) 20 cm. B) 40 cm. C) 30 cm. D) 10 cm. Show Answer Correct Answer: D) 10 cm. ← PreviousNext →Related QuizzesScience QuizzesClass 7 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books