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Monochromatic light of frequency 6.0 xx ...

Monochromatic light of frequency `6.0 xx 10^(14) Hz` is produced by a laser. The power emitted is `2 xx 10^(-3)` w. The number of photons emitted, on the average, by the sources per second is

A

` 5 xx 10 ^(14) `

B

` 5 xx 10 ^( 15)`

C

` 5 xx 10 ^(16)`

D

`5 xx 10^(17)`

Text Solution

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The correct Answer is:
B
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MOTION-PHOTOELECTRIC EFFECT -EXERCISE - 3 SECTION -A (Previous Year Problems (NEET ))
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