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A radio transmitter radiates 1 kW power ...

A radio transmitter radiates `1 kW` power at a wavelength `198.6 m`. How many photons does it emit per second ?

A

`10^(10)`

B

`10^(20)`

C

`10^(30)`

D

`10^(40)`

Text Solution

Verified by Experts

The correct Answer is:
C
`P = (W)/(t) = (nhc)/(lambda t) rArr 10^(3) = (n xx 6.6 xx 10^(-34) xx 3 xx 10^(8))/(198.6 xx 7)`
`rArr n = 10^(30)`.
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