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The maximum intensity of fringes in Young’s experiment is . If one of the slit is closed, then the intensity at that place becomes . Which of the following relation is true

a)

b)

c)

d)

There is no relation between  and



Question ID - 150165 | SaraNextGen Top Answer

The maximum intensity of fringes in Young’s experiment is . If one of the slit is closed, then the intensity at that place becomes . Which of the following relation is true

a)

b)

c)

d)

There is no relation between  and

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

(c)

Suppose slit width’s are equal, so they produces waves of equal intensity say . Resultant intensity at any point  where  is the phase difference between the waves at the point of observation

For maximum intensity     …(i)

If one of slit is closed. Resultant intensity at the same point will be  only,     …(ii)

Comparing equations (i) and (ii) we get

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