Optics Question 1073
Question: In Young’s experiment, the distance between the slits is reduced to half and the distance between the slit and screen is doubled, then the fringe width
[IIT 1981; UPSEAT 2000, 04; Kerala PMT 2004]
Options:
A) Will not change
B) Will become half
C) Will be doubled
D) Will become four times
Show Answer
Answer:
Correct Answer: D
Solution:
$ \beta =\frac{\lambda D}{d}\Rightarrow $ If D becomes twice and d becomes half so $ \beta $ becomes four times.
