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Newton's Law of Cooling

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9 months ago

Newton's Law of Cooling Class 11th

Where is Newton's Law of Cooling used?
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Syed Aquib Ur Rahman

Contributor-Level 10

It's applied in forensics for estimating time of death, in engineering for cooling rate analysis, and in food Science to predict cooling times.

New answer posted

10 months ago

Newton's Law of Cooling Class 11th

Read the following statements:

(A) When small temperature difference between a liquid and its surrounding is doubled, the rate of loss of heat of the liquid becomes twice.

(B) Two bodies P and Q having equal surface areas are maintained at temperature 10°C and 20°C. The thermal radiation emitted in a given time by P and Q are in the ratio 1:1. 15.

(C) A Carnot Engine working between 100K and 400K has an efficiency of 75%.                                    

...more
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alok kumar singh

Contributor-Level 10

A.A is correct statement

η = 1 − T 2 T 1 = 1 − 1 0 0 4 0 0 = 3 4 = 7 5 %

 

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