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HomePhysicsIf the earth suddenly shrinks (without changing mass) to half of its present radius, the acceleration due to gravity will be

If the earth suddenly shrinks (without changing mass) to half of its present radius, the acceleration due to gravity will be

(a)      g/2                                 (b)   4g

(c)   g/4                                     (d)  2g

Answer: b

(13)

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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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