A hot and a cold body are kept in vacuum separated from each other. Which of the following cause decrease in temperature of the hot body

A hot and a cold body are kept in vacuurn separated from each other. Which of the following causes decrease in temperature of the hot body?

Efficiency of an engine is 0.4, when temperature of its sink ( cold body) is 300 K. What id the temperature of the hot body? Find its efficiency, if the temperature of the hot body is kept unchanged, while temperature of the sink (cold body) is lowered by 50 K. Treat it as reversible engine).

Which of the following is a relative measure or indication of hotness or coldness?

Name the following Degree of hotness of coldness of a body.

A cooling curve is plotted between the temperature of a hot body and time. Which of the following is not true for the cooling curve?

A cooling curve is plotted between the temperature of a hot body and time. Which of the following is not true for the cooling curve?

Below the skin, the fat is the form of Or Which of the following helps in maintaining body hot

In hot summer after a both the body 's