JEE Main 2021 — Wave Optics Question with Solution
From: JEE Main 2021 (Online) 26th February Morning Shift
Question
In a Young's double slit experiment two slits are separated by 2 mm and the screen is placed one meter away. When a light of wavelength 500 nm is used, the fringe separation will be :
Choose an option
Show full solutionCorrect option: B
Correct answer
B0.25 mm
Step-by-step explanation
Fringe width () =
d = 2 103 m
= 500 109 m
D = 1 m
Now
=
=
= 2.5 104
= 0.25 mm
d = 2 103 m
= 500 109 m
D = 1 m
Now
=
=
= 2.5 104
= 0.25 mm
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