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11. Heater is supplying heat at the rate of 6000 J/min. If power produced by gas is 90 W. Find the time taken to

11. Heater is supplying heat at the rate of 6000 J/min. If power produced by gas is 90 W. Find the time taken to increase internal energy by 2.5x103 J? (1) 250 s (2) 150 s (3) 500 s (4) 100 s

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