The mass of a photon with a wavelength equal to 1.54 × 10-8 cm is

Question

The mass of a photon with a wavelength equal to 1.54 × 10-8 cm is (A) 0.8268 × 10-34 kg (B) 1.2876 ×10-33 kg (C) 1.4285 × 10-32 kg (D) 1.8884 × 10-32 kg

Tardigrade Admin · Accepted Answer

We know that λ=(h/mv) ; ∴ m=(h/mλ) The velocity of photon (v) =3×108 m sec-1 λ=1.54 ×10-8 cm =1.54×10-34 meter ∴ m=(6.626 ×10-34 Js/1.54×10-10 m×3×108 m sec -1) =1.4385×10-32 kg

Q. The mass of a photon with a wavelength equal to $1.54 \times 1 0^{- 8} c m$ is

$0.8268 \times 1 0^{- 34} k g$

$1.2876 \times 1 0^{- 33} k g$

$1.4285 \times 1 0^{- 32} k g$

$1.8884 \times 1 0^{- 32} k g$

Q. The mass of a photon with a wavelength equal to 1.54×10−8cm is

0.8268×10−34kg

1.2876×10−33kg

1.4285×10−32kg

1.8884×10−32kg

We know that λ=mvh​;∴m=mλh​ The velocity of photon (v)=3×108msec−1 λ=1.54×10−8cm=1.54×10−34 meter ∴m=1.54×10−10m×3×108msec−16.626×10−34Js​ =1.4385×10−32kg

Q. The mass of a photon with a wavelength equal to $1.54 \times 1 0^{- 8} c m$ is

$0.8268 \times 1 0^{- 34} k g$

$1.2876 \times 1 0^{- 33} k g$

$1.4285 \times 1 0^{- 32} k g$

$1.8884 \times 1 0^{- 32} k g$