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HomePhysicsThe value of ‘g’ at a particular point is   9.8  m/s2 . Suppose the earth suddenly shrinks uniformly to half its present size without losing any mass. The value of ‘g’ at the same point (assuming that the distance of the point from the centre of earth does not shrink) will now be

The value of ‘g’ at a particular point is   9.8  m/s2 . Suppose the earth suddenly shrinks uniformly to half its present size without losing any mass. The value of ‘g’ at the same point (assuming that the distance of the point from the centre of earth does not shrink) will now be

(a)       4.9 m/sec2                    (b)   3.1  m/sec2

(c)        9.8 m/sec2                 (d)  19.6 m/sec2

Answer:  c

(11)

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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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