How would the angular separation of inte...

How would the angular separation of interference fringes in Young's double slit experiment change when the distance of separation between slits and screen is doubled ?

Text Solution

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Angular separation,
`theta = (beta)/(D) = (lambda)/(d)`
it does not depend upon `D`, the distance of separation between slits and screen. Therefore, `theta` remains unaffected.

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Interference fringes in Young's double slit experiment with monochromatic light are

always equispaced

always unequally spaced

both equally and unequally spaced

formed by a portion of the wave front.

The shape of the interference fringes in Young's double - slit experiment when D (distance between slit and screen) is very large as compared to fringe width is nearly

straight line.

parabolic.

circular

hyperbolic

The shape of the interference fringes in Young’s double slit experiment when D (distance between slit and screen) is very large as compared to fringe width is nearly

straight line

parabolic