Water and turpentine oil (of specific heat less than that of water) are both heated to same temperature. Equal amounts of these placed in indentical claorimeters are then left in air.

Options

A. Their colloing curves be identical
B. `A` and `B` will represent cooling curves of water and oil respectively.
C. `B` and `A` will represent cooling curves of water and oil, respectively.
D. None of these

Answer

B

Explanation

As we know,
`"Rate of cooling" prop (1)/("specific heat"(c ))`
`:. C_(oil) lt C_(water)`
`implies("Rate of colling")_(oil)gt("Rate of cooling")_(water)`

It is cler that at a particular time after cooling begins, temperature of oil will be less than that of water. So, graph `B` represents the cooling curve of oil and `A` represents the cooling curve of water.