Optics Question 789

Question: A plane mirror is kept parallel to y-axis. A point object is approaching the mirror with velocity u→=(10i^+10j^)m/s. The magnitude of relative velocity of objective w.r.t image is equal to

Options:

A) 202m/s

B) 20m/s

C) 102m/s

D) 10m/s

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Velocity of image in mirror

v→=−10i^+10j^ 

v→rel=u→−v→=20i^.

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