Question

Calculate the mass of photons with wavelength 2.1 into 10 power minus 6 m

Answer 1

Answer:

Photons travel with the speed of light = 3×10

8

m/s

De Broglie wavelength λ=

mv

h

h=6.626×10

−34

Js

Now, 1×10

−9

=

m×3×10

8

6.626×10

−34

m=2.21×10

−33

kg

The mass of photon having wavelength 1nm is 2.21×10

−33

kg