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The value of Planck's constant is 6.63xx...

The value of Planck's constant is `6.63xx10^(-34)` Js. The velocity of light is `3.0xx10^(8)ms^(-1)`. Which value is closest to the wave length in nanometers of a quantum of light with frequency `8xx10^(15)s^(-1)`?

A

`4xx10^(1)`

B

`3xx10^(7)`

C

`2xx10^(-25)`

D

`5xx10^(-18)`

Text Solution

Verified by Experts

The correct Answer is:
A
`lamda=cv=(3xx0xx10^(8)ms^(-1))/(8xx10^(15)s^(-1))=0.375xx10^(-7)m`
`=37.5xx10^(-9)m=4.0xx10nm`
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