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  1. In a Cinema hall, the distance between the projector and the screen is increased by 2%. Then the intensity of illumination on the screen is

    2. A.

     Decreased by 2%
    B.

     Decreased by 4%
    C.

     Increased by 2%
    D.

     Increased by 4%

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    Workspace

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    Answer : Option B

    Explanation :

    In a Cinema hall, the distance between the projector and the screen is increased by 2%. Then the intensity of illumination on the screen is decreased by 4%.

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