J & K CET Engineering J and K - CET Engineering Solved Paper-2008

  • question_answer
    Colours in thin films are due to

    A)  diffraction phenomenon

    B)  scattering phenomenon

    C)  interference phenomenon

    D)  polarization phenomenon

    Correct Answer: C

    Solution :

    When the light rays fallen thin film of oil then . rays are reflected from upper and lower layer of the thin flirts. These reflected rays produce interference pattern due to which surface of thin film appears as coloured.


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