Question

What is the momentum of a photon having frequency $1.5\times {10}^{13}Hz$

• A. $3.3\times {10}^{-29}kgm/s$
  
• B. $3.3\times {10}^{-34}kgm/s$
• C. $6.6\times {10}^{-34}kgm/s$
• D. $6.6\times {10}^{-30}kgm/s$

Answer 1

The correct option is A

$3.3\times {10}^{-29}kgm/s$

$p=\frac{hv}{c}=\frac{6.6\times {10}^{-34}\times 1.5\times {10}^{13}}{3\times {10}^8}=3.3\times {10}^{-29}kg-m/sec$