This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Light > Class 7 Science Chapter 11 Light – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 11 Light Quiz 16 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When the sun gets higher in the sky, shadows get ..... A) Gone. B) Darker. C) Longer. D) Shorter. Show Answer Correct Answer: D) Shorter. 2. What percentage of colors makes white light? A) 100% of red, green, and blue. B) 100% of red, blue, and yellow. C) 0% of red, green, and blue. D) 50% of all colors. Show Answer Correct Answer: A) 100% of red, green, and blue. 3. Something that separates white light into colors is a/an A) Lens. B) Light. C) Prism. D) None of the above. Show Answer Correct Answer: C) Prism. 4. An object that allows light to pass to through it completely, is known as- A) Transparent object. B) Opaque object. C) Translucent object. D) None of the above. Show Answer Correct Answer: A) Transparent object. 5. The impression of an image does not vanish immediately from the retina.It persits there for about ..... of a second. A) 1/16 th. B) 6. C) 1. D) 1/5 th. Show Answer Correct Answer: A) 1/16 th. 6. Faint part of the shadow is ..... A) Hanging. B) Penumbra. C) Hanging. D) Penumbra. Show Answer Correct Answer: B) Penumbra. 7. Refraction is the bending of a wave disturbance as it passes from one ..... into another. A) Glass. B) Area. C) Medium. D) Boundary. Show Answer Correct Answer: C) Medium. 8. The phenomena of bending light is? A) Reflection. B) Refraction. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Refraction. 9. I am used in magnifying glass, Image forme dby me is magnified, Who am I A) Xylem. B) Plane Lens. C) Concave Lens. D) Convex Lens. Show Answer Correct Answer: D) Convex Lens. 10. The Sun is a massive ball of fire. It is the major source of light for the earth A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. A virtual image larger than the object may be produced by an? A) Concave lens. B) Concave mirror. C) Convex lens. D) Plane mirror. Show Answer Correct Answer: B) Concave mirror. 12. A material that allows SOME light to pass through it. A) Prism. B) Translucent. C) Transparent. D) Opaque. Show Answer Correct Answer: B) Translucent. 13. Which is transparent? A) A wooden fence. B) Clean water. C) Aluminum foil. D) A purple balloon. Show Answer Correct Answer: B) Clean water. 14. Lens that focuses on light A) Lens. B) Lens. C) Convex lens. D) Glass. Show Answer Correct Answer: C) Convex lens. 15. C4 plants initially fix carbon dioxide in bundle sheath as 4 carbon long compounds then transported to mesophyll cells to undergo Calvin cycle. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 16. A shadow only shows the ..... of an object. A) Colour. B) Shape. C) Part. D) Size. Show Answer Correct Answer: B) Shape. 17. We can obtain an enlarged and erect image by a convex mirror. (T/F) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. A mirror always form diminished image irrespective of the position of the object in-front of it, then the mirror is:- A) Not possible. B) Concave mirror. C) Convex mirror. D) Plane mirror. Show Answer Correct Answer: C) Convex mirror. 19. The bouncing of light off an object A) Reflection. B) Concave. C) Refraction. D) Convex. Show Answer Correct Answer: A) Reflection. 20. Light travels in a straight line A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. Sunlight is a mixture of electromagnetic waves, ranging from infrared to ultraviolet. Which of the following types of electromagnetic radiation has the longest wavelengths? A) Ultraviolet. B) Visible light. C) Radio waves. D) Infrared. Show Answer Correct Answer: C) Radio waves. 22. A lion's roar is a ..... pitch sound. A) Low. B) High. C) All the above. D) None of the above. Show Answer Correct Answer: A) Low. 23. What is the waste-product of light-dependent reaction? A) Oxygen. B) Water. C) Carbon dioxide. D) None of the above. Show Answer Correct Answer: A) Oxygen. 24. A light wave consists of a A) Transverse wave. B) Longitudinal wave. C) All the above. D) None of the above. Show Answer Correct Answer: A) Transverse wave. 25. Identify the mirror which forms always a virtual and diminished image. A) Convex mirror. B) Converging mirror. C) Concave mirror. D) Plane mirror. Show Answer Correct Answer: A) Convex mirror. 26. The light received from candle is ..... A) Natural Source of light. B) Artificial Source of light. C) All the above. D) None of the above. Show Answer Correct Answer: B) Artificial Source of light. 27. Light travels in a straight line. This is called ..... propagation of light A) Rectilinear. B) Curvilinear. C) Twisted. D) None of the above. Show Answer Correct Answer: A) Rectilinear. 28. The gel-like material that surrounds the grana is called ..... A) Grain. B) Stroma. C) Thylakoid. D) Lamellae. Show Answer Correct Answer: B) Stroma. 29. Which determines the color of an object appears? A) Absorption. B) Diffraction. C) Reflection. D) Refraction. Show Answer Correct Answer: C) Reflection. 30. SHADOW OF MOON FALLING ON EARTH A) SOLAR ECLIPSE. B) LUNAR ECLIPSE. C) DAY AND NIGHT. D) ALL. Show Answer Correct Answer: A) SOLAR ECLIPSE. 31. IdeaPad Slim 5/5i offers a maximum battery backup of ..... ? A) Upto 9 Hours. B) Upto 11 Hours. C) Upto 13 Hours. D) Upto 14 Hours. Show Answer Correct Answer: B) Upto 11 Hours. 32. Which type of lamp provides more lumens per watt? A) High Intensity Discharge (HID). B) Incandescent. C) Halogen. D) All of the options (same efficacy). Show Answer Correct Answer: A) High Intensity Discharge (HID). 33. What is the focal length? A) Length of the focus. B) Distance between the focus and the vertex (along the principal axis). C) Distance between the focus and the center of curvature (along the principal axis). D) Radius of curvature. Show Answer Correct Answer: B) Distance between the focus and the vertex (along the principal axis). 34. What is the angle of incidence of a ray if the reflected ray is at an angle of 90$^\circ$ to the incident ray? A) 60$^\circ$. B) 45$^\circ$. C) 180$^\circ$. D) 90$^\circ$. Show Answer Correct Answer: B) 45$^\circ$. 35. The most common example of a curved mirror is a:- A) Spherical. B) Erect. C) Lateral. D) Concave. Show Answer Correct Answer: A) Spherical. 36. When can water reflect light? A) When it's moving. B) When it's still. C) When it's flowing. D) None of the above. Show Answer Correct Answer: B) When it's still. 37. Energy that can travel through space and time. A) Light energy. B) Reflect. C) Energy. D) Shadow. Show Answer Correct Answer: A) Light energy. 38. ..... objects do not form any shadow. A) Opaque. B) Transparent. C) Translucent. D) None of the above. Show Answer Correct Answer: B) Transparent. 39. Animal have its own light A) Firefly. B) Moon. C) Cat. D) Cow. Show Answer Correct Answer: A) Firefly. 40. Mid point of section of spherical mirror A) Center of curvature. B) Pole. C) Radius. D) Focus. Show Answer Correct Answer: B) Pole. 41. We can't see our face clearly in moving water due to? A) Radation. B) Sight error. C) Reflection. D) Refraction. Show Answer Correct Answer: D) Refraction. 42. *An enzyme that fixes carbon from atmosphere to convert it to complex macromolecule glucose. A) RuBP (Ribulose bisphosphate). B) PGA (3-Phosphoglycerate). C) RuBisCo (Ribulose Bisphosphate Carboxylase). D) G3P (Glyceraldeyhyde 3-Phosphate). Show Answer Correct Answer: C) RuBisCo (Ribulose Bisphosphate Carboxylase). 43. When light partially passed through an object, we say that that object is ..... A) Opaque. B) Optical. C) Translucent. D) Transparent. Show Answer Correct Answer: C) Translucent. 44. Two mirrors can produce infinite images when ..... between them A) Angle is 90. B) Angle is 180. C) Angle is 360. D) Angle is 0. Show Answer Correct Answer: D) Angle is 0. 45. Which colour bends the most after dispersion of light. A) Violet. B) Pink. C) Red. D) Blue. Show Answer Correct Answer: A) Violet. 46. As a wave, light is part of the electromagnetic waves as the visible spectrum or white light. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 47. In YouTube Video Activity 10.9 Refraction of light, what is the colour of the Pencil used to show Refraction of Light A) Pink. B) White. C) Blue. D) Red. Show Answer Correct Answer: C) Blue. 48. Which is true for diffused reflection? A) The reflected rays are not parallel to each other. B) The laws of reflection are obeyed. C) The surface is irregular. D) All of the above. Show Answer Correct Answer: D) All of the above. 49. What does the word "diverging" mean? A) To spread apart. B) To come together. C) Parallel. D) Perpendicular. Show Answer Correct Answer: A) To spread apart. 50. Focal length of plane mirror is a. At infinity b. Zero c. Negative d. None of these A) B. B) A. C) D. D) C. Show Answer Correct Answer: B) A. 51. The bending of light when it moves through one kind of matter to another is ..... A) A rainbow. B) Refraction. C) Reflection. D) Absorption. Show Answer Correct Answer: B) Refraction. 52. Of visible light what has the longest wavelength and the shortest. A) Violet, red. B) Transverse, ray. C) Red, violet. D) White light. Show Answer Correct Answer: C) Red, violet. 53. Example of a luminous object A) Sun. B) Moon. C) Pencil. D) Wall. Show Answer Correct Answer: A) Sun. 54. Some light passes through = ..... A) Opaque. B) Transparent. C) Translucent. D) None of the above. Show Answer Correct Answer: C) Translucent. 55. A concave mirror produces a three times magnified image on a screen. If the object is placed 20cm in front of the mirror, What is the image distance? A) -40cm. B) -60 cm. C) -10 cm. D) -20 cm. Show Answer Correct Answer: B) -60 cm. 56. What will happen to a ray passing from one transparent medium to another with the same refractive index? A) It does not bent. B) It bends away from the normal. C) It bends towards the normal. D) It cannot pass through. Show Answer Correct Answer: A) It does not bent. 57. Which of the the following mirror is used in search lights? A) Convex mirror. B) Plane mirror. C) Converging mirror. D) Diverging mirror. Show Answer Correct Answer: C) Converging mirror. 58. As you look at a rainbow, the colors go from top to bottom in what order? A) GYORVIB. B) Pretty to beautiful. C) Fiber. D) Coasty. Show Answer Correct Answer: D) Coasty. 59. An example of a natural light source is ..... A) A firefly. B) The sun. C) A rainbow. D) All of the above. Show Answer Correct Answer: D) All of the above. 60. Convex mirror image ig A) Formed infront of mirror. B) Real. C) Enlarge. D) Diminshed. Show Answer Correct Answer: D) Diminshed. ← 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