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In a Young's double slit experiment, the...

In a Young's double slit experiment, the angular width of a fringe formed on a distant screen is `1^(@)` . The slit separation is 0.01 mm. The wavelength of the light is

A

0.174 nm

B

0.174 Ã…

C

0.174 `mu m`

D

`0.174 xx 10^(-4)m`

Text Solution

Verified by Experts

The correct Answer is:
C
Angular fringe width, `theta = (lambda)/(d)`
` :. Lambda= theta d`
Here, `d=0.01 mm=10^(-5)m, theta=1^(@)=(pi)/(180)`radians
`lambda=(pi)/(180)x10^(-5)=1.74xx10^(-7)m`
` " " =0.174 xx10^(-6)m=0.174 mu m`
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Knowledge Check

  • In Young's double slit experiment, the angular width of a fringe formed on a distant screen is 0.1^(@) . What is the spacing between the slits, if the waveelngth of light used is 6000 Å?

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