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J & K CET Engineering J and K - CET Engineering Solved Paper-2015

  • question_answer
    If a homogeneous colloid placed in dark is observed in the direction of light, it appears clear and if it is observed from a direction at right angles to the direction of light beam, it appears perfectly dark. This is known as

    A) Brownian effect

    B) Hardy Schuize effect

    C) Einstein effect

    D) Tyndall effect                            

    Correct Answer: D

    Solution :

     When light falls on sol, it absorbs the light and scatter it. This scattering of light is called Tyndall effect. The illuminated path 'of light passing through the colloids is called Tyndall cone.


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