Question

Physics question?( pls refer to the image)

Please answer with explanation. Thanks
:)

Answer 1

Answer A.

Explanation:

For Case 1 :

Thermal Capacity = `C` = `Q/(DeltaT)` = `ms`

It is not certain that Y has smaller specific heat capacity, as the rate of heat loss is different for X or Y.

And the mass of X and Y is just completely unknown.

So, we are unable to know about the thermal capacity.

It is excluded.

For Case 2 :

Same goes for this question, too. At least the mass or specific heat has to be known to answer.

For Case 3:

The room temperature is definitely `T_0`, as the two objects cool down to that temperature and the heat exchange is stopped.

Hence Explained.