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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Laws of reflection

Jamb Physics Questions - Laws of reflection

Question 1:
in the image above, an incident ray XY makes an angle of 15\( ^{\circ} \) with a fixed line AY which is normal to surface of a plane mirror if the mirroe is turned as indicated by the arrow through \( 40^{\circ} \) what angle will the reflected ray make with AY
  • A \( 25^{\circ} \)
  • B \( 40^{\circ} \)
  • C \( 15^{\circ} \)
  • D \( 55^{\circ} \)
  • E \( 95^{\circ} \)
View Answer & Explanation
Question 2:
The plane mirrors in a kaleidoscope are usually placed
  • A At an angle of 60<sup style='font-size: smaller;'>o</sup>
  • B Parallel to one another
  • C Perpendicular to one another
  • D At an angle of 45<sup style='font-size: smaller;'>o</sup>
View Answer & Explanation
Question 3:
When a plane mirror at which a ray is incident is rotated through an angle \( \theta \), the reflected ray will be rotated through
  • A \(\frac{1}{2}\)\(\theta\)
  • B \(\theta\)
  • C 2\(\theta\)
  • D 3\(\theta\)
View Answer & Explanation
Question 4:
A boy on looking into a mirror observed that his face appeared to have grown bigger. The boy must have been looking at a
  • A Convex mirror with his face at the focus
  • B Concave mirror with his face between the focus and the mirror
  • C Concave mirror with his face at the focus
  • D Convex mirror with his face between the focus and the mirror
View Answer & Explanation
Question 5:
A mirror of weight 75N is hung by a cord from a hook on the wall. If the cord makes an angle of 30o with horizontal, the tension in the cord is
  • A 100N
  • B 1500N
  • C 250N
  • D 150N
View Answer & Explanation