A metal ball of mass 1kg is heated by means of a 20 W heater in a room at 20^\circc. The temperature of the ball becomes steady at 50^\circC.Assuming Newton's law of colling, calculate the rate of loss of heat when the ball is at 30° C

NEET Exam Model Paper 4

Question : 108 of 180

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A metal ball of mass 1kg is heated by means of a 20 W heater in a room at 20°c. The temperature of the ball becomes steady at 50°C.Assuming Newton's law of colling, calculate the rate of loss of heat when the ball is at 30° C

20 W
20
3
W
10
3
W
2
3
W

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