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If a source of power 4 kW produces 10^(2...

If a source of power `4 kW` produces `10^(20)` photons`//`second, the radiation belongs to a part of the spectrum called:

A

`gamma ` - rays

B

X -rays

C

Ultraviolet rays

D

Microwaves

Text Solution

Verified by Experts

The correct Answer is:
B
Power (P) = nh f , n = no of photon per second
`f = P/(nh) = (4xx10^(3))/(10^(20)xx6.63 xx10^(-34))=6.03 xx10^(16)Hz ~=6xx10^(16)Hz `
This frequency belongs to X - ray .
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