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HomePhysicsIf g is the acceleration due to gravity on the earth’s surface, the gain in the potential energy of an object of mass m  raised from the surface of earth to a height equal to the radius of the earth R, is

If g is the acceleration due to gravity on the earth’s surface, the gain in the potential energy of an object of mass m  raised from the surface of earth to a height equal to the radius of the earth R, is

(a)      1/2 mgR                         (b)  2 mgR

(c)    mgR                                    (d)  1/4 mgR

Answer: A

(7)

5/5 - (2 votes)

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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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