⚛️ 1995

JAMB Physics 1995 past questions

28 questions from the 1995 JAMB UTME Physics paper. Free, with answers where available.

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Physics JAMB 1995 Q1 ✓ Answer: A
Which of the following is the dimension of pressure?
A
ML-1T-2
B
MLT-2
C
ML2T-3
D
ML-3
Physics JAMB 1995 Q2 ✓ Answer: C
The length of a displaced pendulum bob which passes its lowest point twice every second is
A
0.25m
B
0.45m
C
0.58m
D
1.00m [g = 10ms-2]
Physics JAMB 1995 Q3 ✓ Answer: D
In the diagram above, P, Q and R are vectors. Which of the following options gives the correct relationship between the vectors?
A
P = Q + R
B
P = Q – R
C
P = R – Q
D
P + Q + R = 0
Physics JAMB 1995 Q4 ✓ Answer: B
The value of T in the figure above is
A
10.0 N
B
11.8 N
C
20.0 N
D
40.0 N
Physics JAMB 1995 Q5 ✓ Answer: A
When a ball rolls on a smooth level ground, the motion of its centre is
A
Translational
B
Oscillatory
C
Random
D
Rotational
Physics JAMB 1995 Q7 ✓ Answer: B
The acceleration of the system shown above is
A
2 ms-2
B
4 ms-2
C
6 ms-2
D
8 ms-2
Physics JAMB 1995 Q8 ✓ Answer: C
What is the acceleration due to gravity ‘g’ on the moon, if g is 10ms-2 on the earth?
A
0.10 ms-2
B
0.74 ms-2
C
1.67 ms-2
D
10.00 ms-2
Physics JAMB 1995 Q14 ✓ Answer: A
The energy contained in a wire when it is extended by 0.02m by a force of 500 N is
A
5 J
B
10 J
C
103 J
D
104 J
Physics JAMB 1995 Q17 ✓ Answer: B
The volume of an air bubble increases from the bottom to the top of a lake at constant temperature because
A
Atmospheric pressure acts on the surface of the lake.
B
Pressure increases with depth of the lake.
C
Density remains constant with pressure
D
The bubble experiences an upthrust.
Physics JAMB 1995 Q18 ✓ Answer: B
Temperature is a measure of the
A
Quantity of heat transferred into the molecules of an object
B
Mean kinetic energy of any molecules of the object
C
Kinetic energy of any individual molecules of the substance.
D
Amount of work done by the molecules of the object.
Physics JAMB 1995 Q21 ✓ Answer: D
The equation PxVyTz = constant is Charles’ law when
A
x = 1, y = -1, z = 1
B
x = 0, y = 1, z = -1
C
x = 1, y = 0, z = -1
D
x = 0, y = 1, z = 1.
Physics JAMB 1995 Q22 ✓ Answer: B
An electric kettle with negligible heat capacity is rated at 2000 W. If 2.0kg of water is put in it, how long will it take the temperature of water to rise from 200C to 1000C?
A
420s
B
336s
C
168s
D
84s. [specific heat capacity of water = 4200 J kg-1 K-1].
Physics JAMB 1995 Q25 ✓ Answer: D
Which of the following statements give ‘the TRUE differences between evaporation and boiling I Evaporation occurs at all temperatures while boiling occurs at a fixed temperature for a given pressure. II Evaporation is a surface phenomenon while boiling is an interior phenomenon. III Evaporation is affected by surface areas which boiling is not.
A
I and II only
B
I and III only
C
II and III only
D
I, II and III.
Physics JAMB 1995 Q27 ✓ Answer: D
Which of the following is the exclusive property of a transverse wave?
A
Diffraction
B
Refraction
C
Compression
D
Polarization
Physics JAMB 1995 Q28 ✓ Answer: B
The wavelength of signal from a radio transmitter is 1500m and the frequency is 200kHz. What is the wavelength for a transmitter operating at 1000kHz?
A
7 500 m
B
300 m
C
75 m
D
15 m
Physics JAMB 1995 Q29 ✓ Answer: B
The difference between sound waves and light waves is that sound waves
A
Are transverse while light waves are longitudinal.
B
Require a medium to travel while light waves do not.
C
Can be diffracted but light waves cannot
D
Cannot be reflected but light waves can.
Physics JAMB 1995 Q31 ✓ Answer: A
The pitch of an acoustic device can be increased by
A
Increasing the frequency
B
Increasing the amplitude
C
Decreasing the loudness
D
Decreasing the intensity
Physics JAMB 1995 Q32 ✓ Answer: C
Total eclipse of the sun occurs when the
A
Earth is between the moon and the sun
B
Sun is between the moon and the earth
C
Moon is between the sun and the earth
D
Ozone layer is threatened [PAGE 63]
Physics JAMB 1995 Q36 ✓ Answer: A
Which of the following pairs of colours gives the widest separation in the spectrum of white light?
A
Red and violet
B
Green and yellow
C
Red and indigo
D
Yellow and violet.
Physics JAMB 1995 Q37 ✓ Answer: C
Two parallel plates at a distance of 8.0 x 10-3m apart are maintained at p.d. of 600 volts with the negative plate earthed. What is the electric field strength?
A
4.8 Vm-1
B
75.0 Vm-1
C
4800.0 Vm-1
D
7,5000.0 Vm-1
Physics JAMB 1995 Q38 ✓ Answer: C
At different locations on the earth’s surface, the earth’s magnetic field is
A
The same in magnitude and direction
B
The same in magnitude but different in direction
C
Different in both magnitude and direction
D
Different in magnitude but not in direction.
Physics JAMB 1995 Q39 ✓ Answer: D
If a resistance if halved in value and the potential difference across it is tripled, then the ratio of the new current to the old is
A
1 : 6
B
1 : 3
C
2 : 1
D
6 : 1
Physics JAMB 1995 Q40 ✓ Answer: B
A 12-V battery has an internal resistance of 0.5 ohms. If a cable of 1.0 ohms resistance is connected across the two terminals of the battery, the current drawn from the battery is
A
16.0 A
B
8.0 A
C
0.8 A
D
0.4 A
Physics JAMB 1995 Q41 ✓ Answer: A
The diagram above shows two similar bulbs X and Y connected to a suitable power supply with F as an appropriate fuse rating. If the filament of X breaks, then the
A
Brightness of Y will reduce
B
Brightness of Y will remain constant
C
Brightness of Y will remain constant
D
Fuse F will blow.
Physics JAMB 1995 Q42 ✓ Answer: A
The purpose of a dielectric material in a parallel plate capacitor is to
A
Increase its capacitance
B
Decrease its capacitance
C
Insulate the plates from each other
D
Increase the magnetic field between the plates.
Physics JAMB 1995 Q43 ✓ Answer: C
The resultant in the figure above is
A
15.0 uF
B
9.8 uF
C
1.3 uF
D
0.8 uF
Physics JAMB 1995 Q45 ✓ Answer: B
If the maximum voltage across a 100-ohm resistor is 20V, then the maximum power it can dissipate is
A
5.00 W
B
4.00 W [PAGE 64]
C
2.00 W
D
0.25 W
Physics JAMB 1995 Q47 ✓ Answer: A
The primary winding of a transformer has 400 turns and its secondary has 100 turns. If a source of e.m.f. of 12V is applied to the primary, the secondary e.m.f. will be
A
3 V
B
6 V
C
24 V
D
48 V