Interference was observed in a chamber where air was present. Now, the chamber is evacuated and the same light is used. A careful observer will note :
(
This question was previously asked in
Shift 05/06/2023 3:30 PM - 6:30 PM
A
No Interference
B
interference with bright bands
C
interference with dark bands
D
interference in which width of the fringe will be slightly increased
Correct Answer
interference in which width of the fringe will be slightly increased
Detailed Explanation
The refractive index of air is slightly more than unity. Therefore, when the chamber is evacuated, the refractive index decreases and hence the wavelength increases.This results in a slight increase in the fringe width.
Get Dubuddy App
Practice on the go with our mobile app
More CUET Questions
1
Resolving power of a telescope can be increased by increasing:
(
2
Two nuclei have mass numbers in the ratio 1:8. The ratio of their nuclear radii would be :
(
3
Which of the following is NOT em wave ?
(
4
Kirchhoff's junction rule and loop rule are based on which of the following conservation laws respectively ?
(
Test Series
CUET Subjects
Your CUET Journey Starts with DuBuddy
CUET ki Practice Means DuBuddy Pe Practice