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A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C. | |
A. | 370 [Correct Answer] |
B. | 340 [Wrong Answer] |
C. | 320 [Wrong Answer] |
D. | 300 [Wrong Answer] |