Question Library — KalmiPrep by Kalmitech

Physics UTME / JAMB 1984 Heat Energy & Temperature

Cathode rays are

A

high-energy electromagnetic waves

B

protons

C

streams of electrons

D

neutrons

E

radio waves

medium Difficulty

Physics UTME / JAMB 1984 Heat Energy & Temperature

In the diagram above, X and Y have resistances 6 and 4 ohms respectively, if the power dissipation in X is 10W then power dissipation in Y is

A

2.4W

B

4

C

6.0W

D

6.7W

E

15.0W

medium Difficulty

Physics UTME / JAMB 1984 Heat Energy & Temperature

A simple pendulum, 0.6m long, has a period of 1.5s. What is the period of a similar pendulum of 0.4m length in the same location?

A

\( 1.5 \frac{ \sqrt{2}}{3} \)s

B

\( 1.5 \frac{ \sqrt{3}}{2} \)s

C

2.25s

D

1.00s

E

2.00s

medium Difficulty

Physics UTME / JAMB 1984 Heat Energy & Temperature

In the circuit Shown above, calculate the effective capacitance between X and Y

Attached Figure / Diagram

A

3/4µF

B

\( 2 \frac{10}{13} µF\)

C

12µF

D

\( 4 \frac{12}{13} µF\)

E

13µF

medium Difficulty

Physics UTME / JAMB 1983 Heat Energy & Temperature

Which of the following is NOT a vector quantity?

A

Force

B

Altitude

C

weight

D

Displacement

E

Acceleration

medium Difficulty

Physics UTME / JAMB 1983 Heat Energy & Temperature

The total length of a spring when a mass of 20g is hung from its end is 14cm, while its total length is 16cm when a mass of 30g is hung from the same end. Calculate the unstretched length of the spring assuming Hooke's law is obeyed.

A

9.33cm

B

10.00cm

C

10.66cm

D

12.00cm

E

15.00cm

medium Difficulty

Physics UTME / JAMB 1983 Heat Energy & Temperature

The diagram above shows three circuits, the internal resistances of the batteries are negligible. which of the currents is the largest

A

I1

B

I2

C

I3

D

I4

E

I5

medium Difficulty

Physics UTME / JAMB 1983 Heat Energy & Temperature

Which of the following may be used to determine the relative humidity in a physics laboratory I. Manometer II. Wet-and-Dry Bulb Hygrometer III. Hair Hygrometer IV. A Hydrometer

A

I Only

B

II and III Only

C

II Only

D

III Only

E

II,IIIand IV Only

medium Difficulty

Physics UTME / JAMB 1983 Heat Energy & Temperature

Which of the following figures gives the correct resultant R of two vectors P and Q?

Attached Figure / Diagram

A

I

B

II

C

III

D

IV

E

V

medium Difficulty

Physics UTME / JAMB 1982 Heat Energy & Temperature

A hot metal ball is suspended in the open air. As it cools it loses heat by?

A

conduction only

B

convection only

C

radiation only

D

conduction and convection

E

convection and evaporation

medium Difficulty

Physics UTME / JAMB 1982 Heat Energy & Temperature

One of the following readings represents the measurement of the length of a metal rod using vernier callipers, Taking the reading accuracy into consideration, the most likely one is

A

5.15cm

B

5.165cm

C

5.0cm

D

5.160cm

E

5cm

medium Difficulty

Physics UTME / JAMB 1982 Heat Energy & Temperature

When equal weights of iron and water are subjected to equal supply of heat, it is found that the piece of iron become more hotter than water after a short time because

A

the specific heat of iron is higher than that of water

B

iron is in solid form

C

water is in liquid form

D

the specific heat of water is higher than that of iron

E

the specific heat of iron is infinite

medium Difficulty

Physics UTME / JAMB 1982 Heat Energy & Temperature

An object 15cm high is 30cm from pin-hole camera. If the height of the image formed at the back of the camera is 10cm, the image distance is

A

20cm

B

45cm

C

54cm

D

63cm

E

70cm

medium Difficulty

Physics UTME / JAMB 1982 Heat Energy & Temperature

Why does a piece of cork float on water?

A

there is no upthrust on it when completely immersed in water

B

the upthrust on it when completely immersed in water is greater than its weight in air

C

the upthrust on it when completely immersed in water is less than its weight in air

D

its specific gravity is greater than that of water

E

its specific gravity is the same as that of water

medium Difficulty

Physics UTME / JAMB 1982 Heat Energy & Temperature

Which of the following machines does NOT apply the lever principle?

A

claw hammer

B

wheel barrow

C

single moving pulley

D

sugartongs

E

nutcrackers

medium Difficulty