Question Library — KalmiPrep by Kalmitech

Physics UTME / JAMB 1979 Heat Energy & Temperature

A weight of 1000 grams hangs from a lever 20cm to the fulcrum. At the left is a 500-gram weight 20cm from the fulcrum, and a 200-gram weight x cm away from the fulcrum. What is the value of x that will make the lever balanced?

A

50cm

B

20cm

C

10cm

D

30cm

E

70cm

medium Difficulty

Physics UTME / JAMB 1979 Heat Energy & Temperature

Which of the following statements is correct? Silvered walls of a vacuum flask are used to prevent

A

heat loss due to conduction

B

vacuum loss

C

heat entry into the inner flask due to convection

D

heat loss due to radiation

E

heat loss due to convection

medium Difficulty

Physics UTME / JAMB 1979 Heat Energy & Temperature

fig 12 shows the velocity time graph of a car which starts from rest and is accelerated uniformly at the rate of 3m sec-2 for 5 seconds. It attains a velocity which is maintained for a minute, The car is then brought to rest by a uniform retardation after another 3 seconds. calculate the total distance covered

A

900m

B

1920m

C

960m

D

860m

E

12/7A

medium Difficulty

Physics UTME / JAMB 1979 Heat Energy & Temperature

A uniform bean HK of length 10m and weighing 200N is supported at both ends as shown above. A man weighing 1000N stands at a point P on the beam. If the reactions at point H an K respectively are 800N and 400N, Then the distance HP is

Attached Figure / Diagram

A

4m

B

3.5m

C

3m

D

\( 6 \frac{2}{3} \)m

E

7m

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

A man walks 1km due east and then 1km due north. His displacement is

A

1 km N15oE

B

1 km N30oE

C

\(\sqrt 2\)km N 45oE

D

\(\sqrt 2\)km N 60oE

E

2km N 75oE

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

A palm fruit dropped to the ground from the top of a tree 45m tall. How long does it take to reach the ground? (g = 10ms-2)

A

9s

B

4.5s

C

6s

D

7.5s

E

3s

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

A piece of rubber 10cm long stretches 6mm when a load of 100N is hung from it. What is the strain?

A

60

B

6

C

6 x 10-2

D

6 x 10-3

E

0.6

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

An ice cube floats in a glass of water filled to the brim. What happens when the ice melts?

A

The water level remains the same

B

there is a drop in the level of water in the glass due to condensation on its outside

C

the water in the glass overflows

D

the level of water drops because melted ice occupies less volume

E

none of the above is correct

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

The internationally agreed system of units(SI) for physical measurements are

A

Ib, ft, sec

B

g, m, sec

C

kg, m, sec

D

cm, g, sec

E

kg, cm, sec

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

To determine the weight of an object you could

A

use a beam balance

B

use a spring balance

C

find the force necessary

D

use none of these methods

E

use any of these methods

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

A solid suspended by a piece of string is completely immersed in water. On attempting to lift the solid out of the water, the string breaks when the solid is partly out of the water. This is because

A

the tension in the string decreases as the solid is lifted

B

the mass of the solid has increased

C

the solid apparently weighs less when completely immersed in water than when partially immersed

D

part of the solid still in water is exerting more force on the string

E

the solid is no longer in equilibrium with water

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

The heat from the sun reaches the earth by the process

A

insulation

B

precipitation

C

conduction

D

convection

E

radiation

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

A magnet is moved through a coil of wire. The e.m.f. produced in the wire depends on

A

the number of turns in the coil

B

the strength of the magnet

C

the speed at which the magnet is moved

D

all of the above

E

none of the above

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

For the correction of myopic defects in the human eye we require

A

a convex lens

B

a concave lens

C

a combination of concave and convex lenses

D

a prism

E

a concave mirror

medium Difficulty

Physics UTME / JAMB 1978 Heat Energy & Temperature

Of the following which is different from the other?

A

x-rays

B

gamma-rays

C

cathode rays

D

ultra violet rays

E

infrared rays

medium Difficulty