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NEET Sample Paper NEET Sample Test Paper-4

  • question_answer
    In the Young's double slit experiment the fringe w idth js -found to be 0 Amm. If the whole apparatus is immersed in water of refractive index \[(4/3),\]without disturbing the geometrical arrangement, the new fringe width will be:

    A)  \[0.39\,m\,m\]                

    B)  \[0.40\,m\,m\]

    C)  \[0.53\,m\,m\]               

    D)  \[450\,\mu \]

    Correct Answer: A

    Solution :

    New fringe width is found to be p times decreased because the D is decreased up to \[\frac{D}{\mu }=\beta =\frac{\beta }{\mu }=\frac{0.4}{4/3}=0.3\,mm\]


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