A rigid metallic sphere is spinning around its own axis in the absence of external torque. If the temperature is raised, its volume increases by 
. The change in its angular speed is
A
increases by 
B
decreases by 
C
increases by 
D
decreases by 
Text Solution
Verified by ExpertsThe correct answer is:
D
Taken, 
and 
But 
and 
(or 
)
Change in angular speed
So decrease in angular speed is 
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