McqMate
| Q. |
Rate of cooling depends on the |
| A. | Temperature difference between the body and the surroundings |
| B. | Nature of the radiating surface |
| C. | Area of the radiating surface |
| D. | All of these |
| Answer» D. All of these | |
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Explanation: Newton's Law of Cooling states that the rate of temperature of the body is proportional to the difference between the temperature of the body and that of the surrounding medium. When a body cools by radiation, then rate of cooling depends upon the following factors: • Nature of the radiating surface, that is, emissivity; • Area of the radiating surface; • Mass of the radiating surface; 10 Specific heat of the radiating body; • Temperature of radiating body and ♦ Temperature of the surrounding. |
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