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The wavelength of a spectral line is 400...

The wavelength of a spectral line is `4000 Å`. Calculate its frequency and energy.

A

` 49.5 xx 10 ^(-19) J`

B

`495 xx 10^(-19) J`

C

`4.95 xx 10 ^(-19) J`

D

`4.95 xx 10 ^( -20) ` J

Text Solution

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The correct Answer is:
C
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MOTION-PHOTOELECTRIC EFFECT -EXERCISE-1 (OBJECTIVE QUESTIONS)
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