Dual Nature Of Light Question 471
Question: An X-ray has a wavelength of 0.010 Å. Its momentum is [AFMC 1980; RPMT 1995; Pb. PMT 2004]
Options:
A) 2.126 $ \times $ 10?23 kg-m/sec
B) 6.626 $ \times $ 10-22 kg-m/sec
C) 3.456 $ \times $ 20?25 kg-m/sec
D) 3.313 $ \times $ 10?22 kg-m/sec
Show Answer
Answer:
Correct Answer: B
Solution:
$ p=\frac{h}{\lambda }=\frac{6.6\times {{10}^{-34}}}{0.01\times {{10}^{-10}}} $ $ =6.6\times {{10}^{-22}},kg\text{-}m/\sec $ .
BETA
