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Most Important Selected Qs for JEE AdvancedPhysicsWave Optics

Two coherent sources S₁ and S₂ are kept on the edges of a step as shown in the figure. An infinitely long screen is placed on the right side of sources and lies along y-z plane. Calculate total number of maximas (excluding maxima at infinity) observed on the screen. PS ₁=8 and PS ₂=6 . Where is wavelength of light used. (There is no reflection from steps)

Options

  1. A18
  2. B16
  3. C14
  4. D12

Correct answer

A. 18

Step-by-step solution

Path difference varies from to +10 to -8 . Total no. of maxima =10+8 (excluding the one at -8 as this will never be achieved)

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