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1. |
A solid copper ball of mass 500 gm when quenched in a water bath at 30°C, cools from 530°C to 430°C in 10 sec. What will be the temperature of the ball after the next 10 seconds? |
A. | 300°C |
B. | 320°C |
C. | 350°C |
D. | Cannot be determine |
Answer» D. Cannot be determine | |