Question

Calculate the mass of photon with wavelength 3.6angstromes

Answer 1

so m=6.6×10^-34/3.6×10^-10×3×10^8

=0.6×10^-32

Answer 2

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.