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JEE Main 201322 AprilOnline
Exam
JEE Main
Year
2013
Date
22 April
Mode
Online
Subject
Physics
Chapter
Wave Optics

JEE Main 2013 · 22 April · Online · Physics · Wave Optics

This question has Statement-1 and Statement-2. Of the four choices...

This question has Statement-1 and Statement-2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement-1: In Young's double slit experiment, the number of fringes observed in the field of view is small with longer wavelength of light and is large with shorter wavelength of light. Statement-2: In the double slit experiment the fringe width depends directly on the wavelength of light.

Options

  1. AStatement-1 is true, Statement-2 is true and the Statement-2 is correct explanation of the Statement-1.
  2. BStatement-1 is false and the Statement-2 is true.
  3. CStatement-1 is true Statement-2 is true and the Statement-2 is not correct explanation of the Statement-1.
  4. DStatement-1 is true and the Statement-2 is false.

Correct answer

C. Statement-1 is true Statement-2 is true and the Statement-2 is not correct explanation of the Statement-1.

Step-by-step solution

Fringe width B=Ddλ\mathrm{B}=\frac{\mathrm{D}}{\mathrm{d}} \lambda And number of fringes observed in the field of view is obtained by dλ\frac{\mathrm{d}}{\lambda}
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