A : For interference fringes to be seen, the condition (s)/(S) lt (lambda)/(d) should be satisfied. Where .s. be the size of source slit, S is its distance from plane of two slits and .d. is the distance between two slits. R :In Y.D.S.E, if distance of source slit from the two slits (s) decreases, the interference pattern gets more sharp.

A : For interference fringes to be seen, the condition (s)/(S) lt (lam

1.	A : For interference fringes to be seen, the condition (s)/(S) lt (lambda)/(d) should be satisfied. Where .s. be the size of source slit, S is its distance from plane of two slits and .d. is the distance between two slits. R :In Y.D.S.E, if distance of source slit from the two slits (s) decreases, the interference pattern gets more sharp.
Answer» Both A and R are TRUE and R is the correct EXPLANATION of A Both A and R are true and R is not the correct explanation of A A is true and R is false Both A and R are false Answer :C

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