Question

Heat and work are equivalent. This means-
A. When we supply heat to a body, we do work on it
B. When we do work on a body, we supply heat to it
C. The temperature of a body can be increased by doing work on it
D. A body kept at rest may be set into motion along a line by supplying heat to it

Answer 1

Hint: The mechanical equivalent of heat expresses that motion and heat are commonly exchangeable and that for each situation, a given measure of work would produce a similar measure of heat, given that the work done is completely converted to heat energy.

Complete Step-by-Step solution:
If we are keen on how heat transfer is converted into getting along with work, at that point the conservation of energy principle is significant. The main law of thermodynamics applies the conservation of energy principle to systems where heat transfer and doing work are the strategies for transferring energy into and out of the framework. The principal law of thermodynamics expresses that the change in internal energy of a framework rises to the net heat transfer into the framework less the net work done by the framework. In equation form, the primary law of thermodynamics is $\Delta U = Q - W$.
Here $\Delta U$ is the change in internal energy U of the framework. Q is the net heat transferred to the frame — that is, Q is the sum of all heat transfer within and outside the frame. W is the net work done by the framework—that is, W is the sum of all work done on or by the framework. We utilize the accompanying sign conventions: in the event that Q is positive, at that point there is a net heat transfer into the framework; on the off chance that W is positive, at that point there is net work done by the framework. So positive Q adds energy to the framework and positive W takes energy from the framework. Along these lines $\Delta U = Q - W$.
Thus, from the above explanation we can say that option C is the correct option.

Note: If more heat transfer into the framework happens than work done, the thing that matters is put away as internal energy. Heat engines are a genuine case of this—heat transfer into them happens with the goal that they can accomplish work.