Physics-
General
Easy
Question
A body cools in a surrounding which is at a constant temperature of 
. Assume that it obeys Newton's law of cooling. Its temperature 
is plotted against time t. Tangents are drawn to the curve at the points 
and 
. These tangents meet the time axis at angles of 
and 
, as shown
The correct answer is:
For q-t plot, rate of cooling 
slope of the curve.
At P,
, where k = constant.
At Q
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