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HomePhysics39. If Gravitational constant is decreasing in time, what will remain unchanged in case of a satellite orbiting around earth

39. If Gravitational constant is decreasing in time, what will remain unchanged in case of a satellite orbiting around earth

(a)  Time period                            (b)  Orbiting radius

(c)  Tangential velocity                (d)          Angular velocity

Answer: c

(5)

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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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