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प्रश्न
If Young's double slit experiment is performed in water, _________________ .
विकल्प
the fringe width will decrease
the fringe width will increase
the fringe width will remain unchanged
there will be no fringe
उत्तर
the fringe width will decrease
As fringe width is proportional to the wavelength and wavelength of light is inversely proportional to the refractive index of the medium,
Here,
\[\lambda_M = \lambda/\eta\]
\[ \lambda_M = \text{wavelength in medium}\]
\[\lambda = \text{wavelength in vacuum}\]
\[\eta = \text{refractive index of medium}\]
Hence, fringe width decreases when Young's double slit experiment is performed under water.
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संबंधित प्रश्न
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REASON (R): Fringe width is proportional to (d/D).
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