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Define intensity of light....

 Define intensity of light.

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The intensity of light is the energy of light passing through unit area of plane, taken normal to the direction of propagation of light, in one second.
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Knowledge Check

  • Two nicol prisms are inclined to each other at an angle 30^(@) .If the intensity of ordinary light incident on the first prism , then the intensity of light emerges from the second prism will be

    A
    `(3I)/4`
    B
    `I/2`
    C
    `I/4`
    D
    `(3I)/8`

  • The two coherent sources of equal intensity pruduce maximum intensity of 100 units at a point. If the intensity of one of the source is reduced by 50% by reducing its width then the intensity of light at the same point will be

    A
    `90`
    B
    `89`
    C
    `67`
    D
    `72.85`

  • The two coherent sources of equal intensity produce maximum intensity of 100 units at a point. If the intensity of one of the sources is reduced by 50% by reducing its width then the intensity of light at the same point will be

    A
    90
    B
    89
    C
    67
    D
    `72.85`

    • Similar Questions

    Explore conceptually related problems

    Two nicol prisms are inclined to each other at an angle 30^(@) . If I is the intensity of ordinary light incident on the first prism, then the intensity of light emerges from the second prism will be

    Two nicol prisms are inclined to each other at an angle 30^(@) . If I is the intensity of ordinary light incident on the first prism. Then the intensity of light emerges from the second prism will be

    The two coherent sources of equal intensity produce maximum intersity of 100 units at a point .If the intensity of one of the sources is reduced by 50 % by reducing its width then the intensity of light at the same point will be

    In Young.s double couble slit experiment the intensity of light at a point on the screen where path difference is lambda is I. If intensity at another point is I/4 ,then possible path differences at this point are

    In Young's double slit experiment the intensity of light at a point on the screen where the path difference is lambda , is I. If intensity at another is 1/4, then possible path differences at this point are

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