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Question: Answered & Verified by Expert
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.
PhysicsWave OpticsJEE MainJEE Main 2013 (22 Apr Online)
Options:
  • A
    Statement-1 is true, Statement-2 is true and the Statement-2 is correct explanation of the Statement-1.
  • B
    Statement-1 is false and the Statement-2 is true.
  • C
    Statement-1 is true Statement-2 is true and the Statement-2 is not correct explanation of the Statement-1.
  • D
    Statement-1 is true and the Statement-2 is false.
Solution:
2720 Upvotes Verified Answer
The correct answer is:
Statement-1 is true Statement-2 is true and the Statement-2 is not correct explanation of the Statement-1.
Fringe width $\mathrm{B}=\frac{\mathrm{D}}{\mathrm{d}} \lambda$
And number of fringes observed in the field of view is obtained by $\frac{\mathrm{d}}{\lambda}$

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