Question

Green light of wavelength 5100 angstrom incident on a double slit. If the overall separation of 10 fringes in a screen 200 cm away from the slits is 2cm, find the distance between the slits.

Answer 1

The distance between the slits is  d = 0.51 mm

Explanation:

Given data:

Wavelength of green light = 5100 m

10 B = 2 cm = 2 x 10^-3 m or

B = 2 x 10^-3/10 = 2 x 10^-4 m

B = lambda D/d

d = 5100 x 10^-10 x 2/2 x 10^-4

d = 0.51 mm

Thus the distance between the slits is  d = 0.51 mm

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Answer 2

Explanation:

Your answer is in the attachment

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