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A 124 W bulb converts only 15 % of the e...

A 124 W bulb converts only 15 % of the energy supplied to it into visible light of wavelength 640 nm . How many photons are emitted by the light bulb in one second ?

A

`4 xx 10^(19)`

B

`6 xx 10^(19)`

C

`8 xx 10^(18)`

D

`3 xx 10^(19)`

Text Solution

Verified by Experts

The correct Answer is:
B
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