A body cools in a surrounding which is a...

A body cools in a surrounding which is at a constant temperature of `theta_0`.Assume that it obeys Newton's law of cooling. Its temperature `theta` is plotted against time t. Tangents are drawn to the curve at the points `P(theta=theta_1)` and `Q(theta=theta_2)`. These tangents meet the time axis at angles of `0/_2` and `0/_1` as shown

A

`tan 0/_2/tan 0/_1= (theta_1 - theta_2)/(theta_2 - theta_0)`

B

`tan 0/_2/tan 0/_1= (theta_2 - theta_0)/(theta_1 - theta_0)`

C

`tan 0/_1/tan 0/_2= (theta_1/(theta_1 )`

D

`tan 0/_1/tan 0/_2= (theta_2/(theta_1 )`

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