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Question: The momentum of a photon in an X-ray beam of \(10^{- 10}\)metre wavelength is....

The momentum of a photon in an X-ray beam of 10−1010^{- 10}metre wavelength is.

A

1.5×10−23kg−1.5 \times 10^{- 23}kg -m/sec

B

6.6×10−24kg−m/sec⁡6.6 \times 10^{- 24}kg - m/\sec m/sec

C

6.6×10−44kg−m/sec⁡6.6 \times 10^{- 44}kg - m/\secm/sec

D

2.2×10−52kg−m/sec⁡2.2 \times 10^{- 52}kg - m/\sec m/sec

Answer

6.6×10−24kg−m/sec⁡6.6 \times 10^{- 24}kg - m/\sec m/sec

Explanation

Solution

Momentum of photon

p=hλ=6.6×10−3410−10p = \frac{h}{\lambda} = \frac{6.6 \times 10^{- 34}}{10^{- 10}}= 6.6 × 10–24 kg - m/sec.