YDSE: Film, Medium & Two Wavelengths
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion-(A): If Young's double slit experiment is performed in an optically denser medium than air, then the consecutive fringes come closer.
Reason-(R): The speed of light reduces in an optically denser medium than air while its frequency does not change.
In the light of the above statements, choose the most appropriate answer from the options given below:
Show answer and solution
Answer: (c)
- In a denser medium decreases while stays the same (R is true).
- So decreases, and decreases: fringes come closer (A is true).
- R directly explains A.
- So the answer is (c).