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Wave Optics question

2025 · 24 Jan · Shift 2 · Q65
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Wave Optics question

2025 · 24 Jan · Shift 2 · Q65

JEE MainPhysicsWave OpticsMCQ+4 / −1
Young's double slit inteference apparatus is immersed in a liquid of refractive index 1.44. It has slit separation of 1.5 mm . The slits are illuminated by a parallel beam of light whose wavelength in air is 690 nm . The fringe-width on a screen placed behind the plane of slits at a distance of 0.72 m , will be:
  1. A
    0.63 mm
  2. B
    0.33 mm
  3. C
    0.46 mm
  4. D
    0.23 mm
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