Physics · Wave Optics
Young's double slit interference apparatus is immersed in a liquid of refractive index 1.44. It has a 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:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.46 mm
- 20.63 mm
- 30.33 mm
- 40.23 mm✓
Correct answer
0.23 mm
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