Question

# The momentum of a photon in an X-ray beam of 10−10 metre wavelength is

A

1.5×1023kgm/sec

B

6.6×1024kgm/sec

C

6.6×1044kgm/sec

D

2.2×1052kgm/sec

Solution

## The correct option is B 6.6×10−24kg−m/sec Momentum of photon p=hλ=6.6×10−3410−10=6.6×10−24kg−m/sec.

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