Question

the mass of a photon of wavelength lambda is given by

Answer 1

Answer:

lamda = 3.6 angstrom = 3.6 x 10^-10 mvelocity 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 10^8m = 6.626 x 10^-32/10.8m = 0.6135 x 10^-32m = 6.135 x 10^-33 kg

Answer 2

Answer:

The correct general equation is E

2

=m

2

c

4

+p

2

c

2

m is the rest mass, the one you'd observe if you were in the same reference frame. A photon has no reference frame; it has zero rest mass.