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The wave length of a beam of light is 25...

The wave length of a beam of light is `25.0m` m. Its wave number is

A

`4.0xx10^(1)m^(-1)`

B

`4.0xx10^(6)cm^(-1)`

C

`4.0xx10^(6)m^(-1)`

D

`25.0xx10^(4)cm^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`barv=1/(lamda)=1/(25xx10^(-6))=4.0xx10^(4)m^(-1)`
`=4.0xx10^(2)cm^(-1)`
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