Keeping the mass of the earth as constant, if its radius is reduced to 
th of its initial value, then the period of revolution of the earth about its own axis and passing through the centre (in hours) is (assume the earth to be a solid sphere and its initial period of rotation as 24 h)
Text Solution
Verified by ExpertsThe correct answer is:
A
As we know that,
Time period of revolution of earth at initial condition,
So, if radius is reduced, 
Time period becomes 
On dividing Eq. (i) by Eq. (ii), we get
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