Physics · Wave Optics
In a Young's double slit experiment, the slit separation is 0.8 mm and the interference pattern is obtained on a screen kept 50 cm from the plane of the slits. If the first bright fringe is formed 0.4 mm from the central maximum, the wavelength of the light used is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1680 nm
- 2640 nm✓
- 3560 nm
- 4480 nm
Correct answer
640 nm
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