First slide

Coherent sources and their importance in interference

Question

If a torch is used in place of monochromatic light in Young’s experiment what will happens

Easy

A

Fringe will appear for a moment then it will disappear
B

Fringes will occur as from monochromatic light
C

Only bright fringes will appear
D

No fringes will appear

Solution

If we use torch light in place of monochromatic light then overlapping of fringe pattern take place. Hence no fringe will appear.

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