Question

Calculate the mass of a photon with wavelength 5.A°​

Answer 1

Answer:

Given λ λ = 5pm = 5 x 10-12 m Velocity of photon = Velocity of light= 3.0 × 108m/sec. ∴ ∴ λ λ = h m v hmv or m = h λ v hλv = 6.626 × 10 − 34 J s 5 × 10 − 12 m × 3.0 × 10 8 m / s e c 6.626×10−34Js5×10−12m×3.0×108m/sec = 4.417 × 10−27Kg

mark me as brainliest...

Answer 2

Answer:

The mass of a photon with wavelength 5°A will be $4.42 * 10^{-33} kg$.

Explanation:

De-Broglie wavelength ∧ = $\frac{h}{mc}$

where,

h = planks constant = $6.626 *10^{-34} Js$

m = mass of photon

c = speed of light in vaccum = $3*10^{8} ms^{-1}$

Here wavelength ∧ = 5°A = $5*10^{-10} m$

On substituting in the above equation,

Mass of the photon m = $\frac{6.626*10^{-34} }{5*10^{-10}*3*10^{8} }$

                                     = $4.42 * 10^{-33} kg$

Therefore, the mass of a photon with wavelength 5°A will be $4.42 * 10^{-33} kg$.