Question
Hard
Solving time: 4 mins
In a YDSE bi-chromatic light of wavelengths and are used. The distance between the slits is and the distance between the plane of the slits and the screen is . The minimum distance between two successive regions of complete darkness is
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Text solutionVerified
Let nth minima of coincides with mth minima of , then
If we take the first ratio, then and .
If we take the second ratio, then and
This is not acceptable. If we take the ratio, then and
i.e. 4th minima of coincides with minima of .
Location of this minima is
.
Next 11 th minima of will coincide with 8th minima of .
Location of this minima is
.
Required distance
If we take the first ratio, then and .
If we take the second ratio, then and
This is not acceptable. If we take the ratio, then and
i.e. 4th minima of coincides with minima of .
Location of this minima is
.
Next 11 th minima of will coincide with 8th minima of .
Location of this minima is
.
Required distance
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Question Text | In a YDSE bi-chromatic light of wavelengths and are used. The distance between the slits is and the distance between the plane of the slits and the screen is . The minimum distance between two successive regions of complete darkness is |
Updated On | Oct 4, 2023 |
Topic | Wave Optics |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 Video solution: 2 |
Upvotes | 227 |
Avg. Video Duration | 6 min |