Question Library — KalmiPrep by Kalmitech

Physics WAEC / WASSCE 1988 Heat Energy & Temperature

When sugar at the bottom of a glass of water gradually dissolves, the water level does not change applicably. Which of the following statements best describe this?

A

Water is suitable solvent for sugar

B

The sugar and the water have become single solution

C

The volume of water molecule does not change when sugar dissolves.

D

Sugar molecule is small than that of water

E

Water molecules are separated by large spaces between them

medium Difficulty

Physics WAEC / WASSCE 1988 Heat Energy & Temperature

Which of the following explains the concave meniscus of water in a glass tube?

A

The adhesion between water and glas is greater than the cohesion between water molecules

B

The cohesion between water molecule is greater than the adhesion between glass and water

C

The molecules of water in the glass are moving faster than the molecules in the other parts

D

The molecules of water at the water-air boundary are often attracted to the center of the tube

E

The weight of the water pulls the central part of the surface down

medium Difficulty

Physics WAEC / WASSCE 1988 Heat Energy & Temperature

The unit of inductance is the

A

farad

B

henry

C

hertz

D

ampere

E

coulomb

medium Difficulty

Physics WAEC / WASSCE 1988 Heat Energy & Temperature

Which of the following is/are not correct about isotopes of an element? The have

A

the same neutron number

B

the same proton number

C

same number of electrons

D

same chemical properties

E

different physical poperties.

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

A lorry travels 10km northwards, 4km eastwards, 6km southwards, 4km westwards to arrive at a point T. What is the total displacement?

A

6km south

B

4km north

C

6km north

D

4km east

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

A 20-toothed gear wheel drives a 60-toothed one. If the angular speed of the smaller wheel is 120 rev s-1, the angular speed of the larger wheel is

A

3 rev s-1

B

40 rev s-1

C

360 rev s-1

D

2400 rev s-1

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

A tap supplies water at 25oC while another supplies water at 75oC. If a man wishes to bathe with water at 40oC, the ratio of the mass of cold water to the mass of hot water required is

A

1 : 3

B

15 : 8

C

7 : 3

D

3 : 1

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

When heat is applied to one end of a metal rod, the molecules at the other end soon begin to vibrate with greater amplitude than before because heat has been transferred by

A

radiation

B

convection

C

conduction

D

evaporation

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

A note is called an octave of another note when

A

its frequency is twice that of the first note

B

its frequency is half of the first note

C

the notes have the same fundamental frequency

D

its periodic time is twice that of the first note

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

Two strings of the same length and under the same tension gives notes of frequencies in the ratio 4 : 1. The masses of the strings are in the corresponding ratio of

A

2 : 1

B

1 : 2

C

1 : 4

D

1 : 16

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

A dynamo primarily combines

A

mechanical energy into electrical energy

B

electrical energy into kinetic energy

C

potential energy into kinetic energy

D

kinetic energy into potential energy

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

In a certain fusion reaction, a deuteron (\(^{2}_{1}H\)) interacts with a triton (\(^{3}_{1}He\)) and produces an a-particle (\(^{4}_{2}He\)) and a second product. The second product is

A

a proton

B

an electron

C

a neutron

D

a gamma ray

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

Which of the following symbolic representations is correct for an atom X with 22 electrons and 43 neutrons?

A

\(^{43}_{22}X\)

B

\(^{22}_{43}X\)

C

\(^{65}_{43}X\)

D

\(^{65}_{22}X\)

medium Difficulty

Physics UTME / JAMB 1988 Heat Energy & Temperature

A particle is injected perpendicularly into an electric field, it travels along a curved path as depicted in the image above,the particle is

A

gamma ray

B

electron

C

neutron

D

proton

medium Difficulty

Physics UTME / JAMB 1987 Heat Energy & Temperature

Which of the following units is equivalent to kgms-1?

A

Ns-1

B

Nms-1

C

Ns

D

Js-1

medium Difficulty