Question

A pulse of light of duration 100 ns is absorbed completely by a small object initially at rest. Power of the pulse is 30and the speed of light is . The final momentum of the object is:

A

B

C

D

Hard
Solution
verified
Verified by Toppr
Correct option is B)

Sol
Watt, 
Incident energy
By debroglie wavelength,
and Energy of photon is
From above two equations,  

Momentum kg ms

So, the answer is option (B).

Video Explanation
image
play-icon
Solve any question of Dual Nature of Radiation And Matter with:-
Was this answer helpful?
upvote 0
downvote0
Similar questionsstar-struck