Light MCQs with answers

Dear candidates you will find MCQ questions of 8th Class - Science | Chapter: Light here. Learn these questions and prepare yourself for coming examinations. You can check the right answer of any question by clicking the option or by clicking view answer button.
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Q. A smooth shining surface, which rebounds the light back in same or in different direction, is called
  • (A) a mirror
  • (B) a lens
  • (C) reflection of light
  • (D) point of incidence
💬 Discuss
✅ Correct Answer: (A) a mirror
Q. The impression or sensation remains on the retina for about how may seconds even after removal of the object ?
  • (A) 1 second
  • (B) 1/16th of a second
  • (C) 16 seconds
  • (D) 1 minute
💬 Discuss
✅ Correct Answer: (B) 1/16th of a second
Q. Beam of light striking the reflecting surface is called
  • (A) reflecting ray
  • (B) incident ray
  • (C) refracted ray
  • (D) normal ray
💬 Discuss
✅ Correct Answer: (B) incident ray
Q. The cells present in the retina of eye and responding to intensity of light are:
  • (A) Rod-shaped cells
  • (B) Cones
  • (C) Both of these
  • (D) None of these
💬 Discuss
✅ Correct Answer: (A) Rod-shaped cells
Q. Band of seven colours is called
  • (A) VIBGYOR
  • (B) spectrum
  • (C) dispersion
  • (D) reflection
💬 Discuss
✅ Correct Answer: (B) spectrum
Q. The cells present in the retina of eye and responding to colour are:
  • (A) Rod-shaped cells
  • (B) Cones
  • (C) Both of these
  • (D) None of these
💬 Discuss
✅ Correct Answer: (B) Cones
Q. Front balged part of the eyeball is called
  • (A) cornea
  • (B) choroid
  • (C) pupil
  • (D) retina
💬 Discuss
✅ Correct Answer: (A) cornea
Q. The disease of eye in which crystalline lens becomes hazy or even opaque due to development of membrane over it is
  • (A) Myopia
  • (B) Cataract
  • (C) Hypermetropia
  • (D) Presbyopia
💬 Discuss
✅ Correct Answer: (B) Cataract
Q. Which one of the following statements is correct regarding rods and cones in the human eye?
  • (A) Cones are sensitive to dim light
  • (B) Cones are sensitive to bright light
  • (C) Rods are sensitive to bright light
  • (D) Rods can sense colour
💬 Discuss
✅ Correct Answer: (B) Cones are sensitive to bright light
Q. Angle of incidence is equal to the angle of reflection:
  • (A) Always
  • (B) Sometimes
  • (C) Under special conditions
  • (D) Never
💬 Discuss
✅ Correct Answer: (A) Always
Q. In case of reflection of light, the angle of incidence (i) and the angle of reflection (r) are related as
  • (A) i=r
  • (B) i
  • (C) i>r
  • (D) no definite relation
💬 Discuss
✅ Correct Answer: (A) i=r
Q. Image formed by a plane mirror is
  • (A) Virtual, behind the mirror and enlarged
  • (B) Virtual, behind the mirror and of the same size as the object
  • (C) Real at the surface of the mirror and enlarged
  • (D) Real, behind the mirror and of the same size as the object
💬 Discuss
✅ Correct Answer: (B) Virtual, behind the mirror and of the same size as the object
Q. Name the type of mirror used as a backview mirror.
  • (A) Plane mirror
  • (B) Concave mirror
  • (C) Convex mirror
  • (D) Any of these
💬 Discuss
✅ Correct Answer: (C) Convex mirror
Q. Reflection is:
  • (A) absorption of light rays by the surface of an object
  • (B) passing of light rays through the surface of an object
  • (C) bouncing back of light rays from the surface object
  • (D) None of these
💬 Discuss
✅ Correct Answer: (C) bouncing back of light rays from the surface object
Q. Visually impaired people can read and write using
  • (A) electronic writer
  • (B) digital pens
  • (C) braille system
  • (D) hearing aids
💬 Discuss
✅ Correct Answer: (C) braille system
Q. Splitting of light into its colours is known as:
  • (A) spectrum
  • (B) dispersion
  • (C) rainbow
  • (D) none of these
💬 Discuss
✅ Correct Answer: (B) dispersion
Q. The image formed by a camera and a simple microscope are respectively
  • (A) real and real
  • (B) real and virtual
  • (C) virtual and virtual
  • (D) virtual and real
💬 Discuss
✅ Correct Answer: (B) real and virtual
Q. Which of the following is not a source of light:
  • (A) Tubelight
  • (B) The sun
  • (C) The moon
  • (D) Fire fly
💬 Discuss
✅ Correct Answer: (C) The moon
Q. What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?
  • (A) 60°
  • (B) 45°
  • (C) 90°
  • (D) 180°
💬 Discuss
✅ Correct Answer: (B) 45°
Q. Which type of mirror is used to obtain a virtual, laterally inverted image and equal in size of an object ?
  • (A) plane mirror
  • (B) concave mirror
  • (C) convex mirror
  • (D) all of these
💬 Discuss
✅ Correct Answer: (A) plane mirror

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Table of contents

  1. A smooth shining surface, which rebounds the light back in same or in different direction, is called
  2. The impression or sensation remains on the retina for about how may seconds even after removal of th
  3. Beam of light striking the reflecting surface is called
  4. The cells present in the retina of eye and responding to intensity of light are:
  5. Band of seven colours is called
  6. The cells present in the retina of eye and responding to colour are:
  7. Front balged part of the eyeball is called
  8. The disease of eye in which crystalline lens becomes hazy or even opaque due to development of membr
  9. Which one of the following statements is correct regarding rods and cones in the human eye?
  10. Angle of incidence is equal to the angle of reflection:
  11. In case of reflection of light, the angle of incidence (i) and the angle of reflection (r) are relat
  12. Image formed by a plane mirror is
  13. Name the type of mirror used as a backview mirror.
  14. Reflection is:
  15. Visually impaired people can read and write using
  16. Splitting of light into its colours is known as:
  17. The image formed by a camera and a simple microscope are respectively
  18. Which of the following is not a source of light:
  19. What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident
  20. Which type of mirror is used to obtain a virtual, laterally inverted image and equal in size of an o

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