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In producing a pure specturm, the incide...

In producing a pure specturm, the incident light is passed through a narrow slit placed i the focal plane of an chromatic lens because a narrow slit

A

a produces less diffraction

B

increases intensity

C

allows onlyone colour at a time

D

allows miore paralle beam whenit pases thorugh the lens

Text Solution

Verified by Experts

The correct Answer is:
D
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