When two objects P and Q are supplied with the same quant...
When two objects P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The mass of P is half that of Q. The ratio of the specific heat capacity pf P to Q is
1:4
4:1
1:1
2:1
Correct answer is C
H = mcθ
HP = HQ, θP = 2θ,
mP = 12mQ
∴ HP = mQCPθP, also HQ = mQCQθQ
Since HP = HQ
∴ mPcPθP = mQcPθq
Putting in the conditions
12mQ × cP × 2θQ = mQ × θQ × cQ
∴ cP = cQ
CpCQ= 11
= 1:1
The surfaces of conveyor belts are made rough so as to? ...
The iron core of an induction coil is made from bundles of wire so as to ...
The major difference between a pure semiconductor and a pure metal is that ...
When an athlete perspires after running, he loses heat through ...
Which of the following statements about magnetic lines of force is not correct? They ...
Three 3ω resistance are connected in parallel what is the equivalent resistance? ...