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In single slit diffraction a =0.14 mm, D...

In single slit diffraction a `=0.14` mm, D =2 and distance of second dark band from central maxima is `1.6 cm` the wavelenght of light is

A

`6500Å`

B

`7500Å`

C

`5600Å`

D

`8500Å`

Text Solution

Verified by Experts

The correct Answer is:
C
`asintheta=nlamda`
`:.axx(x)/(D)=nlamda`
`:.lamda=(14xx10^(-5)xx16xx10^(-3))/(2xx2)=5600Å`
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