Question

Which of the following substances (A, B and C) has the highest specific beat?

Options

• A

• B

• C

• All have equal specific heat

Answer 1

C

Explanation:

Q = msdT

`"dQ"/dt = ms "dT"/dt` 

Pdt = msdT

dT = `P/"ms"dt`

Rise in temperature (dT) ∝ `1/s`

 We can see from the graph that graph A has a higher temperature rise than graphs B and C.

∴ dT is highest for A and lowest for C, and specific heat value is highest for C and lowest for A.