Q. 175.0( 2 Votes )

If Young’s double slit experiment is performed in water,
A. the fringe width will decrease

B. the fringe width will increase

C. the fringe width will remain unchanged

D. there will be no fringe

Answer :

As the entire setup is in water, the wavelength will decrease by a factor .

Hence the fringe width becomes, . So, the fringe width decreases.

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