Home Physics Electromagnetic Wave NEET Previous Years Question In Young's double slit experiment the separa…
Physics Electromagnetic Wave NEET Previous Years Question MCQ (Single Correct)

In Young's double slit experiment the separation between the slits is 2 mm, the wavelength of the light used is and distance between the screen and slits is 100 cm. It is found that the angular width of the fringes is . To increase the fringe angular width to (with same and ) the separation between the slits needs to be changed to [NEET 2018]

A
1.8 mm
B
1.9 mm
C
2.1 mm
D
1.7 mm

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The correct answer is:
B

Here,

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Angular width,

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