Question Library — KalmiPrep by Kalmitech

Physics UTME / JAMB 1997 Heat Energy & Temperature

In the diagram above, which of the angles \( \theta _1 \) , \( \theta _2 \) , \( \theta _3 \) and \( \theta _4 \) is the angle of deviation of the ray of light passing through the glass prism XYZ?

A

\( \theta _3 \)

B

\( \theta _2 \)

C

\( \theta _1 \)

D

\( \theta _4 \)

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

The distance x m travelled by a particle in time t seconds is described by the equation x = 10 + 12t\(^2\), Find the average speed of the particle between the time interval t = 2s and t = 5s

A

60 ms-1

B

72 ms-1

C

84 ms-1

D

108 ms-1

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

A load of 20N on a wire of cross-sectional area 8 x 10-7m2, produces an extension of 10m2. calculate Young's modulus for the material of the wire if its length is 3m

A

7.0 x 1011Nm-2

B

7.5 x 1011Nm-2

C

8.5 x 1011Nm-2

D

9.0 x 1011Nm-2

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

A piece of wire gauze can be made to lie on water because

A

the wire guaze is less dense than water

B

the water molecules repels the wire guaze upwards

C

the water surface has the effect of an elastic thin skin

D

of the cohensive forces between the water and the wire guaze molecules

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

In a meter bridge experiment, two resistor 2\(\Omega\) and 3\(\Omega\) occupy the left and right gaps respectively. Find the balance point from the left side of the bridge

A

20cm

B

40cm

C

60cm

D

80cm

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

One of the features of the fission process is that

A

its products are not radioactive

B

it leads to chain reaction

C

neutrons are not released

D

the sum of the masses of the reactants equals the sum of masses of the products

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

The graphite rods surrounding the uranium fuel rods in a nuclear reactor, are used to

A

absorb the neutrons and hence halt the nuclear process

B

create the neutrons and hence slow up the nuclear process

C

slowdown the neutrons and hence slow up the nuclear process

D

speed up the neutrons and hence speed up the nuclear process

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

What happens when a, certain quantity of pure ice is completely changed to water at 0oC?

A

latent heat is absorbed, the mass remains constant, and the volume decreases

B

latent heat is given out, the mass remains constant and the volume decreases

C

latent heat is given out, the mass increases and the volume remains constant

D

latent heat is absorbed, the mass decreases and the volume increases

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

The following are the scores of ten students in a test of 20 marks: 15, 16, 17, 13, 16, 8, 5, 16, 19, 17. What is the modal?

A

13

B

15

C

16

D

19

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

Find the standard deviation of the following data -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5

A

2

B

3

C

√10

D

√11

medium Difficulty

Physics UTME / JAMB 1997 Heat Energy & Temperature

For a rough inclined plane on which lies a body of weight W, the angle θ in the diagram above becomes the angle of friction if

Attached Figure / Diagram

A

tan θ = coefficient of static friction

B

cos θ = coefficient of dynamic friction

C

sin θ = coefficient of sliding friction

D

sec θ = limiting frictional force

medium Difficulty

Physics WAEC / WASSCE 1996 Heat Energy & Temperature

The diagram above represents a portion of a micrometer screw gauge in which the horizontal scale is in millimetres. What is the reading on the instrument?

Attached Figure / Diagram

A

3.72mm

B

3.50mm

C

3.30mm

D

3.28mm

E

3.22mm

medium Difficulty

Physics WAEC / WASSCE 1996 Heat Energy & Temperature

A ball of mass 5.0kg hits a smooth vertical wall normally with a speed of 2ms-1 and rebounds with the same speed. Determine the impulse experienced by the ball

A

20.0kg ms-1

B

10.0kg ms-1

C

5.0kg ms-1

D

1.3kg ms-1

E

0.0kg ms-1.

medium Difficulty

Physics WAEC / WASSCE 1996 Heat Energy & Temperature

The inside of a vacuum flask is usually coated with silver to reduce heat lost by

A

convection

B

conduction

C

radiation

D

absorption

E

evaporation

medium Difficulty

Physics WAEC / WASSCE 1996 Heat Energy & Temperature

Cloud formation is the direct result of

A

precipitation

B

vaporization

C

fusion

D

sublimation

E

condensation

medium Difficulty