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How many photons are emitted by a laser ...

How many photons are emitted by a laser source of ` 5 xx 10^(-3)` W operating at 633.2 nm in 2 s ?
` (h = 6.63 xx 10^(-34) Js)`

A

`3.2xx10^16`

B

`1.6xx10^16`

C

`4xx10^16`

D

`0.4xx10^16`

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AAKASH INSTITUTE ENGLISH-DUAL NATURE OF RADIATION AND MATTER -ASSIGNMENT SECTION A. Objective (Only one answer)
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