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A student is asked to measure the wavele...

A student is asked to measure the wavelength of monochromatic light. He sets up the apparatus sketched below `S_(1),S_(2),S_(3)` are narrow parallel slits, L is a sodium lamp and M is a micrometer eye-piece. The student fails to observe interference fringes. You would advise him to:

A

Increase the width of `S_(1)`

B

Decrease the distance between `S_(2)` and `S_(3)`

C

Replace L with a white light source

D

Replace M with a telescope

Text Solution

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The correct Answer is:
B
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VMC MODULES ENGLISH-RAY OPTICS AND WAVE OPTICS -EFFICIENT
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