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MCQ practice · SSC Physics Board questions · Chapter 8: Reflection of Light

Barishal Board 2023

The image formed in a concave mirror-

  1. i. smaller than the object and upright
  2. ii. equal to the object and inverted
  3. iii. larger than the object and upright

Think it through first, then pick an option.

  1. a i and ii
  2. b i and iii
  3. c ii and iii
  4. d i, ii and iii
Answer and explanation

Correct answer: c ii and iii

i false: A smaller image in a concave mirror comes from an object outside the focus and it is inverted; a small upright image does not occur. ii true: When the object is at the centre of curvature the image is equal to it and inverted. iii true: When the object is between the focus and the pole the image is larger than the object and upright.

Why the other options are wrong

  • a i and ii: This is not the answer; the right combination is ii and iii. i false: A smaller image in a concave mirror comes from an object outside the focus and it is inverted; a small upright image does not occur. ii true: When the object is at the centre of curvature the image is equal to it and inverted. iii true: When the object is between the focus and the pole the image is larger than the object and upright.
  • b i and iii: This is not the answer; the right combination is ii and iii. i false: A smaller image in a concave mirror comes from an object outside the focus and it is inverted; a small upright image does not occur. ii true: When the object is at the centre of curvature the image is equal to it and inverted. iii true: When the object is between the focus and the pole the image is larger than the object and upright.
  • d i, ii and iii: This is not the answer; the right combination is ii and iii. i false: A smaller image in a concave mirror comes from an object outside the focus and it is inverted; a small upright image does not occur. ii true: When the object is at the centre of curvature the image is equal to it and inverted. iii true: When the object is between the focus and the pole the image is larger than the object and upright.