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NEET Sample Paper NEET Sample Test Paper-87

  • question_answer
    The separation between successive fringes in a double slit arrangement is x. If the whole arrangement is dipped under water what will be the new fringe separation? [The wavelength of light being used is \[5000\,\,\overset{{}^\circ }{\mathop{A}}\,\]]

    A) 1.5 x                

    B)        x   

    C) 0.75 x  

    D)        2 x

    Correct Answer: C

    Solution :

    [c] When the arrangement is dipped in water; \[\beta '=\beta /\mu =\frac{x}{4/3}=\frac{3}{4}x=0.75x\]


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