The interference pattern shifts downward...

The interference pattern shifts downward by 4mm, when a polystyrene sheet of refractive index 1.8 is place in front of the lower slit. If wavelength used is =`lamda` = 683 nm, separation between slits is 2 mm and separation between slits and screen is 10 cm then thickness of sheet

A

0.1mm

B

0.2mm

C

0.3mm

D

0.4mm

Text Solution

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The correct Answer is:

A

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