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The wavelenth of light is 5000 Å . Find ...

The wavelenth of light is 5000 Å . Find the wave number.

A

`5 xx 10^(6)`

B

`2 xx 10^(6)`

C

`3 xx 10^(6)`

D

`1 xx 10^(6)`

Text Solution

Verified by Experts

The correct Answer is:
B
`lambda = 5000 Å, bar(lambda) = ?`
`bar(lambda) = (1)/(lambda) = (1)/(5 xx 10^(-7)) = 2 xx 10^(6)m^(-1)`.
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