Question

what is the momentum of photon having frequency 1.5 × 10 ki power 13​

Answer 1

Answer:

3.3 × 10^-29 kg.m/s

Explanation:

According to the given question,

frequency = 1.5×10^13 (Say f")

let, wavelength = L

and speed of light = c

momentum = p

planks constant = h

Then, we are asked to find the momentum.

So, We know that;

• frequency = c/ L

So, L = c/frequency

L = c/f

And we also know that

wavelength = h/ momentum

So, c/f = h/p

• f/c = p/h

• p = hf/c

So, putting the values of the following,

• c = 3×10^8

• h = 6.6×10^-34

• L = 1.5×10^13

We get, p = 9.9 × 10^-21/3×10^8

• p = 3.3 × 10^-29 kg.m/s ans.