Question
Physics Question on Wave optics
For sustained interference fringes in double slit experiment, essential condition/s is/are (1) sources must be coherent (2) the intensities of the two sources must be equal Here, the correct option/s is/are
A
Neither (1) nor (2)
B
Both (1) and (2)
C
only (1)
D
only (2)
Answer
only (1)
Explanation
Solution
For sustained interference fringes, the conditions are a) Two sources of light must be coherent in nature and of same frequency. b) Amplitude of interfering light waves must be same.