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HomePhysicsThe acceleration due to gravity is g at a point distant r from the centre of earth of radius R. If  r < R , then

The acceleration due to gravity is g at a point distant r from the centre of earth of radius R. If  r < R , then

(a)       g ∝ r                            (b)  g ∝ r2

(c)       g ∝ r-1                            (d)  g ∝ r-2

Answer:  a

(11)

5/5 - (1 vote)

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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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