A hollow sphere of mass ' 
' and radius ' 
' is rotating with angular frequency ' 
'. It suddenly stops rotating and 
of kinetic energy is converted to heat. If ' 
' is the specific heat of the material in 
then rise in temperature of the sphere is (M.I. of hollow sphere 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
: Kinetic energy of hollow sphere,
According to question,
Heat in the hollow sphere 
of 
[Using eqn (i)]
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