JAMB Physics Past Questions & Answers - Page 340

1,696.

2000cm3 of a gas is collected at 27oC and 700mmHg. What is the volume of the gas at standard temperature and pressure?

A.

1896.5cm3

B.

1767.3cm3

C.

1676.3cm3

D.

1456.5cm3

Correct answer is C

\(V_2 = \frac{P_1V_1T_2}{P_2T_2}\)

\(V_2 = \frac{700 \times 2000 \times 273}{760 \times 300}\)

1,697.

Two metals P and Q are heated through the same temperature difference. If the ratio of the linear expansivities of P to Q is 2:3 and the ratio of their
length is 3: 4 respectively, the ratio of the increase in lengths of P to Q is

A.

1:2

B.

2:1

C.

8:9

D.

9:8

Correct answer is A

P: \(\frac{\alpha h \theta}{\alpha h \theta}\)

\(\frac{2 \times 3 \times \theta}{3 \times 4 \times \theta}\)

\(\frac{1}{2}\)

1,698.

Clinical thermometers are examples of

A.

pressure gas thermometer

B.

resistance thermometer

C.

alcohol thermometer

D.

mercury- in - glass thermometer

Correct answer is D

No explanation has been provided for this answer.

1,700.

The pressure at any point in a liquid at rest depends only on the

A.

depth and the density

B.

mass and the volume

C.

quantity and the surface area

D.

surface area and the viscosity

Correct answer is A

No explanation has been provided for this answer.