Question

What is the momentum of a photon having frequency

1.5 × 10¹³ Hz?

• A. 3.3 × 10^–29 kg m/s
• B. 3.3 × 10^–34 kg m/s
• C. 6.6 × 10^–34 kg m/s
• D. None

Answer 1

Answer: (A)

3.3 × 10^–29 kg m/s

Answer 2

P = $\frac{h\nu}{c}$= $\frac{6.6 \times 10^{–34} \times 1.5 \times 10^{13}}{3 \times 10^{8}}$ kg m/s