LAKSHYA JEE (2024) Ray Optics and Optical Instruments Quiz
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Questions and Answers

In the given scenario, if the incident light ray is turned by 10º and the mirror by 20º, what is the angle turned by the reflected ray?

  • 90º clockwise (correct)
  • 60º clockwise
  • 120º clockwise
  • 30º clockwise
  • What is the angle 'θ' shown in the figure when a light ray is incident on a plane mirror that subsequently reflects off another plane mirror at a 60º angle?

  • 60º
  • 120º
  • 30º (correct)
  • 90º
  • When a point object moves with a velocity of 3iˆ + 4jˆ + 5kˆ towards a plane mirror moving at 4iˆ + 5jˆ + 8kˆ, what is the velocity of the image formed?

  • -3iˆ - 4jˆ + 11kˆ (correct)
  • -3iˆ - 4jˆ + 5kˆ
  • 7iˆ + 9jˆ + 11kˆ
  • 3iˆ + 4jˆ + 11kˆ
  • A man standing 2 m away from a plane mirror on a wall sees his image. If his eyes are at a height of 1.8 m above the ground, how long is the visible floor (distance between extreme points) due to reflection from the mirror?

    <p>None of these</p> Signup and view all the answers

    When a man M2 stands at a distance L from a line connecting two plane mirrors each of length L, what is the configuration shown in the figure?

    <p>Man sees infinite images of himself</p> Signup and view all the answers

    What is the angle of incidence of a ray incident on a plane mirror if the ray retraces its path after reflection?

    <p>90°</p> Signup and view all the answers

    In the scenario described, what is the angle between the two mirrors that would make the light ray start retracing its path after the third reflection?

    <p>30°</p> Signup and view all the answers

    In SHM, if a point object is kept in front of a plane mirror performing SHM with a 2 cm amplitude, what would be the amplitude of the mirror such that the object is always in front of the mirror?

    <p>1 cm</p> Signup and view all the answers

    If a person's eye is at a height of 1.5m and views their image in a plane mirror 0.8m above the ground, what length of the image will the person see?

    <p>1.0m</p> Signup and view all the answers

    If an unnumbered wall clock shows 04:25:37, what time will its image show when seen in a plane mirror?

    <p>07:34:23</p> Signup and view all the answers

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