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A double slit is illuminated by the ligh...

A double slit is illuminated by the light of wavelength 12000A .The slits are 0.1 cm apart and the screen is placed one metre away.calculate the angular posiyion of 10 maximum in radians ?

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The correct Answer is:
B
`d sin theta = (10^(-10))(3xx10^(8)) = 3xx10^(-2)m = 3cm`
`(A)` for `d = 0.3 cm`, we will get fringes on entire screen
`(B)` For `d = 0.03 cm`, we will get fringes on entire screen
`(C )` For `d = 3 cm, theta = 45^(@)`
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