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Two spheres of same material have radii 1m and 2m are at temperature of 2000K and 1000K respectively.The ratio of energy radiated in unit time is

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Two spheres of the same material have radii 1m and 4m and temperatures 4000K and 2000K respectively. The energy radiated per second by the first sphere is greater than that by the second.

Two spheres of the same material have radii 1m and 4m and temperature 4000Kand 2000K respectively.The energy radiated per second by the first sphere is:

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  • Two spheres of the same material have radii 1m and 4m and temperatures 4000K and 2000K respectively. The ratio of the energy radiated per second by the first sphere to that by the second is

    A
    `1:1`
    B
    `16:1`
    C
    `4:1`
    D
    `1:9`

  • Two spheres of the same materical have radii 1m and 4m and temperature 400K and 2000K respectively The ratio of the energy radiated per second by the first sphere to that by the second is .

    A
    `1 :1`
    B
    `16:1`
    C
    `4:1`
    D
    `1:9`

  • Two spheres of the same materical have radii 1m and 4m nad temperature 4000K and 2000K respectively The energy radiated per second by the first sphere is .

    A
    greater than that of the second
    B
    Less than that of the second
    C
    equal in both cases
    D
    the information is incomplete to draw any conclusion

    • Similar Questions

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    Two spheres of same material have radius 1 m and 4 m and temperature 4000 K and 2000 K respectively. The energy radiated per second by the first sphere is

    Two spherre of the same material and radii 4 m and 1m respectively are at temperature 1000 K and 2000 K respectively. The ratio of energies radiated by them per second is

    The sphere of radii 8 cm and 2 cm are cooling. Their temperatures are 127^(@)C and 527^(@)C respectively . Find the ratio of energy radiated by them in the same time

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