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HomePhysicsA spherical planet far out in space has a mass  M0  and diameter  D0 . A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity which is equal to

A spherical planet far out in space has a mass  M0  and diameter  D0 . A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity which is equal to

(a)       GM0 /D02                             (b)     4m GM0 /D02

(c)      4 GM0 /D02                          (d)      GmM0 /D02

Answer:  c

(14)

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12. An ideal gas is taken through the cycle A→ B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is

(a)      – 5 J (b)  – 10 J (c)   – 15 J (d)  – 20 J Answer-a (126)

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