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In Young’s double slit experiment, the separation between the slit is haled and the distance between the slits and screen is doubled.  The fringe-width will

a)

Be halved

b)

Be doubled

c)

Be quadrupled

d)

Remain unchanged



Question ID - 150182 | SaraNextGen Top Answer

In Young’s double slit experiment, the separation between the slit is haled and the distance between the slits and screen is doubled.  The fringe-width will

a)

Be halved

b)

Be doubled

c)

Be quadrupled

d)

Remain unchanged

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

Let S be a slit illuminated by monochromatic light of wavelength , let  be coherent sources and distance between them be d and distance between source and screen is D.  then, fringe width (W) is given by

When,

The fringe width is quadrupled.

127 votes


127