A hot body, initially at a temperature θ , is kept in surroundings that are at a temperature θ0 . The graph, shown here, is a graph of a function, f(θ) , of θ , against time. Assuming that the body loses heat primarily by convection, the function f(θ) , is
![](https://www.sarthaks.com/?qa=blob&qa_blobid=692827257106660725)
(1) f(θ) = k (θ - θ0)
(2) f(θ) = \(\frac{k}{(log(\theta-\theta_0))}\)
(3) f(θ) = \(\frac{k}{log(\theta-\theta _0)}\)
(4) f(θ) = k log (θ - θ0)