The wavelenth of light is 5000 Å . Find the wave number.
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)`
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Correct Answer - 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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