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 t...

Assessment: JAMB UTME - Physics - 2017 Subject: Physics

Question 1 Report

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

Answer Details

H = mcθ

HP = HQ, θP = 2θ,

mP = $\frac{1}{2}$ mQ

∴ HP = mQCPθP, also HQ = mQCQθQ

Since HP = HQ

∴ mPcPθP = mQcPθq

Putting in the conditions

$\frac{1}{2}$ mQ × cP × 2θQ = mQ × θQ × cQ

∴ cP = cQ

$\frac{C_{p}}{C_{Q}}$ = $\frac{1}{1}$

= 1:1

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Electric Cells

Temperature And Its Measurement

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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 t...

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