Question Library — KalmiPrep by Kalmitech

Physics WAEC / WASSCE 2000 Heat Energy & Temperature

(a) Define angle of contact (b) Draw sketches to show angles of contact for a capillary tube dipped vertically in (i) water; (ii) mercury.

medium Difficulty

Physics UTME / JAMB 1999 Heat Energy & Temperature

The inner diameter of a test tube can be measured accurately using a?

A

micrometer screw guage

B

pair of dividers

C

metre rule

D

pair of vernier calipers

medium Difficulty

Physics UTME / JAMB 1999 Heat Energy & Temperature

If the stress on a wire is 10\(^7\)Nm\(^{-2}\) and the wire is stretched from its original length of 10.00 cm to 10.05 cm. The Young's modulus of the wire is

A

5 . 0 x 104 Nm-2

B

5 . 0 x 105 Nm-2

C

2 . 0 x 108 Nm-2

D

2 . 0 x 109 Nm-2

medium Difficulty

Physics UTME / JAMB 1999 Heat Energy & Temperature

An astronomical telescope is said to be in normal adjustment when the

A

eye is accommodated

B

focal length of objective lens is longer than that of eye piece

C

final image is at the near point of eye

D

final image is at infinity

medium Difficulty

Physics UTME / JAMB 1999 Heat Energy & Temperature

Steel is more suitable for permanent magnet than iron because the former

A

is easily demagnetized by shaing vigorously

B

is an alloy of many metals

C

is easily magnetized by alternating current through one cycle

D

retains magnetism more than iron

medium Difficulty

Physics UTME / JAMB 1999 Heat Energy & Temperature

In fleming's right-hand rule, the thumb, the forefinger and the middle finger if held mutually at right angles represent respectively, the

A

motion, the field and the induced current

B

induced current, the motion and the field

C

field, the induced current and the motion

D

induced current, the field and the motion

medium Difficulty

Physics UTME / JAMB 1999 Heat Energy & Temperature

The diagram above represents a transverse electromagnetic wave travelling with speed 3.0 x 108ms-1. What is the frequency of the wave.

A

3.0 x 107Hz

B

9.0 x 107Hz

C

1.0 x 109Hz

D

3.0 x 109Hz

medium Difficulty

Physics UTME / JAMB 1999 Heat Energy & Temperature

The diagram above shows a lift pump with valves at P and Q. During a downward stroke of the piston

Attached Figure / Diagram

A

both valves are open

B

P is open while Q is closed

C

P is closed while Q is open

D

Both valves are closed

medium Difficulty

Physics WAEC / WASSCE 1999 Heat Energy & Temperature

Palm oil from a bottle flows out more easily after it as been heated because the

A

molecules are given potential energy during the heating

B

friction between oil layers is reduced

C

oil molecules force each other out

D

adhesion between the oil molecules and those of the bottle is increased

medium Difficulty

Physics WAEC / WASSCE 1999 Heat Energy & Temperature

A motorcyclist, passing a road junction, moves due west for 8 s at a uniform speed of 5ms-1. He then moves due north for another 6 s with the same speed. At the end of the 6s his displacement from the road junction is 50m in the direction of

A

N53oE

B

N37oE

C

N53oW

D

N37oW

medium Difficulty

Physics WAEC / WASSCE 1999 Heat Energy & Temperature

The time rate of change of displacement is known as

A

speed

B

velocity

C

impulse

D

acceleration

medium Difficulty

Physics WAEC / WASSCE 1999 Heat Energy & Temperature

Iron at 30oC feels colder to the hand than wood at 28oC because

A

their linear expansivities are not equal.

B

the temperature of the iron is higher than that of the wood

C

iron is a better radiator of heat than wood

D

iron conducts heat more quickly from the hand than wood

medium Difficulty

Physics WAEC / WASSCE 1999 Heat Energy & Temperature

Which of the following statements is not correct?

A

A sea breeze is due to convection in air

B

Cotton materials are better than woollen ones for use in hot weather

C

Convectional currents play an important role in the cooling of the engine of a motor car

D

The vacuum space in a flask helps to reduce heat loss by radiation.

medium Difficulty

Physics WAEC / WASSCE 1999 Heat Energy & Temperature

Which of the following statements about evaporation is not correct?

A

The rate of evaporation of a liquid varies with temperature

B

The molecules of an evaporating liquid have an average speed

C

Evaporation occurs when faster molecules escape from the surface of a liquid

D

Evaporation takes place inside a liquid.

medium Difficulty

Physics WAEC / WASSCE 1999 Heat Energy & Temperature

Which of the following statements is not correct about long sight?

A

A Iong-sighted person can see distant objects clearly

B

ight from a nearby object is focused behind the retina.

C

The eyeball is too short

D

The defect is corrected by using a diverging lens.

medium Difficulty