Q. The momentum of a photon is $3.3 \times 10^{- 29}\ kg$-$m/sec.$ Its frequency will be
A) $3 \times 10^{3}Hz$
B) $6 \times 10^{3}Hz$
C) $7.5 \times 10^{12}Hz$
D) $1.5 \times 10^{13}Hz$
Explanation
(d) $p = \frac{hv}{c} \Rightarrow v = \frac{pc}{h} = \frac{3.3 \times 10^{- 29} \times 3 \times 10^{8}}{6.6 \times 10^{- 34}} = 1.5 \times 10^{13}Hz$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.