This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
(T - T1 ) / (t2 - t1) = constant

perhaps T1 = temperature at time t = t1 sec
       T = temperature t time t = t2 sec

 The ratio is constant  means the rate of change of temperature is a constant.  The temperature of a body is rising at a uniform rate in time.

This means that the body is getting cooled or getting heated at a uniform rate.

This could probably mean that the body is being supplied a constant amount of heat energy in time.  This means energy/time = power is a constant.

1 5 1