Question

Assertion: Distance between position of bright and dark fringe remain same in YDSE 

Reason: fringe width β =  λD/d 

(1) If both assertion and reason are true and reason is the correct explanation of assertion.

(2) If both assertion and reason are true but reason is not the correct explanation of assertion.

(3) If assertion is true but reason is false.

(4) If both assertion and reason are false. 

Answer 1

Correct option (1) If both assertion and reason are true and reason is the correct explanation of assertion.

Explanation:

Distance between consecutive fringe is independent of its number.