Question

calculate the mass of a photon with a wavelength of 3.6A

Answer 1

lamda = 3.6 angstrom = 3.6 x 10^-10 m.

velocity of photon = velocity of light.

m = h/lamda*v ( from de-brogile's equation)

m = 6.626 x 10^-34/3.6 x10^-10 x 3 x 10^8.

m = 6.626 x 10^-32/10.8.

m = 0.6135 x 10^-32.

m = 6.135 x 10^-33 kg.

Answer 2

Answer:

6*10³¹

Explanation:

use de broglie wavelength formula

λ = h/mv

λ= 3.6*10^-10 m

h= 6.6*10^-34

v = 3*10^8

put all the value u get v