Question
Question: Figure shows Young's double slit apparatus. S<sub>1</sub> and S<sub>2</sub> are coherent sources emi...
Figure shows Young's double slit apparatus. S1 and S2 are coherent sources emitting light of wavelength l. Light waves are emitted from S1 and S2 in phase. A point P on the screen corresponds to position of 5th maximum. What is the phase difference between waves when they arrive at P ?
A
5 p
B
9 p
C
10 p
D
15 p
Answer
10 p
Explanation
Solution
Path difference corresponding to 5th maximum is 5l. Corresponding phase difference is 10 p