Dual Nature Of Radiation And Matter Ques 76
76. Themomentum of a photon of an electromagnetic radiation is $3.3 \times 10^{-29}$ $ kg $ $ms^{-1}$. What is the frequency of the associated waves ?
$[h=6.6 \times 10^{-34} Js ; c=3 \times 10^{8} $ $ms^{-1}]$
[1990]
(a) $1.5 \times 10^{13} $ $Hz$
(b) $7.5 \times 10^{12} $ $Hz$
(c) $6.0 \times 10^{3} $ $Hz$
(d) $3.0 \times 10^{3} $ $Hz$
Show Answer
Answer:
Correct Answer: 76.(a)
Solution:
- (a) As $\lambda=\frac{h}{p}$ and $\lambda=\frac{c}{v}$; so
$ v=\frac{c}{\lambda}=\frac{c P}{h}=3 \times 10^{8} \times \frac{3.3 \times 10^{-29}}{6.6 \times 10^{-34}} $
$=1.5 \times 10^{13} $ $Hz$
BETA
