Effect of surface area on temperature variation.

Question

The temperature variation in a large plate, as shown in the below figure, would correspond to which of the following condition (s)?                                                                                                                    (IES-98)

 

 1. Unsteady heat.

2. Steady- state with variation of k.

3. Steady – state with heat generation.

Select the correct answer using the codes given below:

a) 2 alone                    b) 1 and 2

c) 1 and 3                    d) 1,2 and 3