MCQOPTIONS
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MCQOPTIONS
| 1. |
A hot body, obeying Newton's law of cooling is cooling down from its peak value \[89{}^\circ C\] to an ambient temperature of \[39{}^\circ C\]. It takes 5 minutes in cooling down from \[89{}^\circ C\] to \[49{}^\circ C\]. How much time will it take to cool down from \[62{}^\circ C to 32{}^\circ C\](Given In 2 = 9.693, In 5 = 1.699) |
| A. | 3.75 minutes |
| B. | 8.6 minutes |
| C. | 9.6 minutes |
| D. | 6.5 minutes |
| Answer» C. 9.6 minutes | |