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Most Important Selected Qs for JEE AdvancedPhysicsWave Optics

In a YDSE setup, we plot the phase difference ( ) between both waves at point P on the screen against the angular position of point P on the screen. The graph is as shown below. Choose the correct statement(s)

Options

  1. AThe distance S₁ S₂=2
  2. BThere are a total of 4 minima on the screen
  3. CThe first maxima above the centre is at = 4
  4. DAt = 3 , intensity is minimum.

Correct answer

B. There are a total of 4 minima on the screen

Step-by-step solution

aligned & 2 (d )= & 4 = 2 d ( 2 ) & d=2 aligned So, there will be four minima on screen corresponding to path difference of - 3 2 ,- 2 ,+ 2 and + 3 2

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