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MHT CET 2020 (19 Oct, Shift 2) · Biprism, Thin Films & Other Devices

Biprism, Thin Films & Other Devices question from MHT CET 2020 (19 Oct, Shift 2)

Q24MHT CET 2020 · 19 OCT · SHIFT 2Easy

Biprism, Thin Films & Other Devices

A graph is plotted between the fringe-width Z and the distance D between the slit and eye-piece, keeping other adjustment same. The correct graph is

(A)

Figure

(B)

Figure

(C)

Figure

(D)

Figure

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Answer: (d)

  1. Z=λDdZ = \frac{\lambda D}{d}, so Z∝DZ \propto D with other quantities fixed.
  2. The graph is a straight line through the origin, which is graph C.
  3. So the answer is (d) C.
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