MCQOPTIONS
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| 1. |
A hollow Sphere of Mass 'M' and radius 'R' is rotating with an angular frequency of ω. It stops suddenly and the 75% of the Kinetic Energy is converted to heat. If 'S' is the specific heat of the material of sphere in S.I units, the rise in the temperature of the sphere is |
| A. | \(\frac{{{R^2}{\omega ^2}}}{{4S}}\) |
| B. | \(\frac{{3{R^2}{\omega ^2}}}{{10S}}\) |
| C. | \(\frac{{{R^2}{\omega ^2}}}{{4JS}}\) |
| D. | \(\frac{{2{R^2}{\omega ^2}}}{{3S}}\) |
| Answer» B. \(\frac{{3{R^2}{\omega ^2}}}{{10S}}\) | |