The path differece between the two indentical waves arriving at a point is `85.5 lambda`. If path difference is `42.5 mu m` then wavelenght of light u
The path differece between the two indentical waves arriving at a point is `85.5 lambda`. If path difference is `42.5 mu m` then wavelenght of light used is
A. `5971Å`
B. `4971Å`
C. `3971Å`
D. `6971Å`
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Correct Answer - B
`85.5lamda=42.5xx10^(-6)`
`:.lamda=(42.5xx10^(-6))/(85.5)=4971Å`
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