If the energy of a photon is 10 eV, then its momentum is

Question

If the energy of a photon is 10 eV, then its momentum is (A) 5.33 × 10-23 kg m / s (B) 5.33 × 10-25 kg m / s (C) 5.33 × 10-29 kg m / s (D) 5.33 × 10-27 kg m / s

Tardigrade Admin · Accepted Answer

Momentum of a photon propto (E/c)=(10 × 1.6 × 10-19/3 × 108) =5.33 × 10-27 kg ms -1

Q. If the energy of a photon is $10 e V$ , then its momentum is

$5.33 \times 1 0^{- 23} k g m / s$

$5.33 \times 1 0^{- 25} k g m / s$

$5.33 \times 1 0^{- 29} k g m / s$

$5.33 \times 1 0^{- 27} k g m / s$

Momentum of a photon $\propto \frac{E}{c} = \frac{10 \times 1.6 \times 1 0 ^{- 19}}{3 \times 1 0 ^{8}}$
$= 5.33 \times 1 0^{- 27} k g m s^{- 1}$

Q. If the energy of a photon is 10eV, then its momentum is

5.33×10−23kgm/s

5.33×10−25kgm/s

5.33×10−29kgm/s

5.33×10−27kgm/s