⚛️ 1997

JAMB Physics 1997 past questions

37 questions from the 1997 JAMB UTME Physics paper. Free, with answers where available.

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Physics JAMB 1997 Q1 ✓ Answer: B
At what respective values of X, Y and Z would the unit of force, the Newton, be dimensionally equivalent to MxLyTz?
A
-1, 1, 2
B
1, 2, -2
C
1, -1, 2
D
-1, 1, -2
Physics JAMB 1997 Q1 ✓ Answer: B
The physical quantity that has the same dimensions as impulse is
A
Energy
B
Momentum
C
Surface tension
D
Pressure.
Physics JAMB 1997 Q2 ✓ Answer: C
The distance xm traveled by a particle in time t seconds is described by the equation x = 10 + 12t². 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
Physics JAMB 1997 Q3 ✓ Answer: A
A 5kg block is released from rest on a smooth plane inclined at an angle of 30o to the horizontal. What is its acceleration down the plane?
A
5.0 ms-2
B
5.8 ms-2
C
8.7 ms-2
D
25.0 ms-2 [g = 10 ms-2]
Physics JAMB 1997 Q4 ✓ Answer: D
An arrow of mass 0.1kg moving with a horizontal velocity of 15 ms-1 is shot into a wooden block of mass 0.4 kg lying at rest on a smooth horizontal surface. Their common velocity after impact is
A
15.0 ms-1
B
7.5 ms-1
C
3.8 ms-1
D
3.0ms-1
Physics JAMB 1997 Q6 ✓ Answer: D
Which of the following with respect of a body performing simple harmonic motion are in phase?
A
Displacement and velocity of the body.
B
Displacement and force on the body
C
Velocity and acceleration f the body.
D
Force acting on the body and the acceleration.
Physics JAMB 1997 Q6 ✓ Answer: D
The force of attraction between two point masses is 10-4N when the distance between them is 0.18m. If the distance is reduced to 0.06m, calculate the force.
A
1.1 x 10-5N
B
3.3 x 10-5N
C
3.0 x 10-4N
D
9.0 x 10-4N Physics 1998
Physics JAMB 1997 Q9 ✓ Answer: D
For what value of Q are the forces in the diagram above in equilibrium?
A
15o
B
30o
C
45o
D
60o
Physics JAMB 1997 Q10 ✓ Answer: B
The figure above shows a block of mass m sliding down a rough inclined plane QP at angle Q. The forces acting on the block along the plane QP are
A
mg sin Q and the normal reaction
B
mg sin Q and the force of friction
C
mg cos Q and the normal reaction
D
mg cos Q and the force of friction.
Physics JAMB 1997 Q12 ✓ Answer: C
An object of mass 100 g projected vertically upwards from the ground level has a velocity of 20 ms-1 at a height of 10 m. Calculate its initial kinetic energy at the ground level.
A
10 J
B
20 J
C
30 J
D
50J [g = 10 ms-2; neglect air resistance]
Physics JAMB 1997 Q13 ✓ Answer: C
An electric water pump rated 1.5 KW, lifts 200kg of water through a vertical height of 6 metres in 10 seconds. What is the efficiency of the pump?
A
90.0%
B
85.0%
C
80.0%
D
65.0% [g = 10ms-2; neglect air resistance]
Physics JAMB 1997 Q14 ✓ Answer: A
è W For a rough inclined plane on which lies a body of weight W, the angle è in the diagram above becomes the angle of friction if
A
tan Q = coefficient of static friction
B
cos Q = coefficient of dynamic friction
C
sin Q = coefficient of sliding friction
D
sec Q = limiting frictional force.
Physics JAMB 1997 Q19 ✓ Answer: D
An empty 60 litre petrol tank has a mass of 10 kg. It mass when full of fuel of relative density 0.72 is
A
7.2 k
B
33.2 kg
C
43.2 k
D
53.2 kg
Physics JAMB 1997 Q20 ✓ Answer: C
The length of mercury thread when it is at 0oC, 100oC and at an unknown temperature è is 25 mm, 225mm and 174mm respectively. The value of is
A
85.0oC
B
80.0oC
C
75.0oC
D
70.0oC
Physics JAMB 1997 Q21 ✓ Answer: A
Equal masses of copper and rubber are raised to the same temperature. After sometimes, the copper was observed to be at a lower temperature because
A
the specific heat capacity of copper is lower than that of rubber
B
copper expands more than rubber
C
the specific heat capacity of rubber is lower than that of copper
D
rubber expands more than copper.
Physics JAMB 1997 Q22 ✓ Answer: D
Before starting a journey, the tyre pressure of a car was 3 X 105 Nm-2 at 27oC. At the end of the journey, the pressure rose to 4 X 105 Nm-2. Calculate the temperature of the tyre after the journey assuming the volume is constant.
A
400oC
B
300oC
C
273oC
D
127oC
Physics JAMB 1997 Q25 ✓ Answer: A
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.
Physics JAMB 1997 Q26 ✓ Answer: A
The correct cooling curve for a molten substance such as naphthalene is represented by
A
Temp. oC Time (min)
B
Temp. oC Time (min)
C
Temp. oC Time (min)
Physics JAMB 1997 Q27 ✓ Answer: A
What happens when a gas expands at a constant temperature?
A
It pressure decreases.
B
The total momentum of its molecules remains constant.
C
Its pressure decreases and the total momentum of its molecules remains constant.
D
Its pressure decreases and the total kinetic energy of its molecules decreases. [PAGE 67]
Physics JAMB 1997 Q28 ✓ Answer: B
Ripples on water and light waves are similar because both
A
have the same frequency
B
can be refracted and diffracted
C
are longitudinal waves
D
have the same velocity.
Physics JAMB 1997 Q29 ✓ Answer: A
Under constant tension and constant mass per unit length, the note produced by a plucked string is 500 Hz when the length of the string is 0.90 m. At what length is the frequency 150 Hz?
A
3 m
B
4 m
C
5 m
D
6 m
Physics JAMB 1997 Q30 ✓ Answer: B
The colours seen in thin films of oil on the road and in soap bubbles are due to
A
Reflection
B
Interference
C
Diffraction
D
Polarization.
Physics JAMB 1997 Q31 ✓ Answer: B
The diagram above shows two waveforms P and Q at a particular instant of time. The two waves will interfere
A
destructively to produce a wave of a larger amplitude
B
destructively to produce a wave of a smaller amplitude
C
constructively to produce a wave of a larger amplitude
D
constructively to produce a wave of a smaller amplitude.
Physics JAMB 1997 Q32 ✓ Answer: A
If the load at the end of a sonometer wire is immersed in a bucket of water, the original fundamental frequency of the wire could be restored by
A
decreasing the length of the wire
B
increasing the length of the wire
C
increasing the mass per unit of the wire
D
changing the temperature of the water. Sun
Physics JAMB 1997 Q33 ✓ Answer: A
Moon Earth X When the sun, the moon and the earth are as shown in the diagram above, an observer standing at X is in
A
penumbra and sees a partial eclipse
B
penumbra and sees a total eclipse
C
umbra and sees a partial eclipse
D
umbra and sees a total eclipse.
Physics JAMB 1997 Q35 ✓ Answer: D
Light of velocity 3.0 x 108 ms-1 is incident on a material of refractive index n. If the velocity of light is reduced to 2.4 X 108 ms-1 in the material, what is n?
A
2.33
B
2.25
C
1.33
D
1.25
Physics JAMB 1997 Q37 ✓ Answer: D
The electromagnetic waves that are sensitive to temperature changes are
A
X-rays
B
gamma-rays
C
ultra-violet rays
D
infra-red rays. [PAGE 68]
Physics JAMB 1997 Q38 ✓ Answer: D
In the diagram above, which of the anglesQ1, Q2, Q3, and Q4 is the angle of deviation of a ray of light through the glass prism, XYZ?
A
Q3
B
Q2
C
Q1
D
Q4
Physics JAMB 1997 Q40 ✓ Answer: A
Three electric cells each of e.m.f. 1.5V and internal resistance 1.0 Ohms are connected in parallel across an external resistance of T Ohms!. Calculate the value of the current in the resistor.
A
0.5 A
B
0.9 A
C
1.5 A
D
4.5 A
Physics JAMB 1997 Q42 ✓ Answer: C
If 8 X 10-2 J of work is required to move 100 ìC of charge from a point X to a point Y in an electrical circuit, the potential difference between X and Y if
A
4.0 X 102 V
B
4.0 X 104 V
C
8.0 X 102 V
D
8.0 X 104 V
Physics JAMB 1997 Q43 ✓ Answer: B
In a metre bridge experiment, two resistors 2 &! and 3 Ohms occupy the left and right gaps respectively. Find the balance point from the left side of the bridge.
A
20 cm
B
40 cm
C
60 cm
D
80 cm
Physics JAMB 1997 Q44 ✓ Answer: C
Two 50 uF parallel plate capacitors are connected in series. The combined capacitor is then connected across a 100-V battery. The charge on each plate of the capacitor is
A
5.00 X 10-5 C
B
2.50 X 10-3 C
C
1.25 X 10-3 C
D
1.00 X 10-2 C
Physics JAMB 1997 Q45 ✓ Answer: C
What is the total electrical energy consumed by using an electric cooker rated 1000 W for 5 hrs?
A
5.3 X 103 J
B
6.5 X 103 J
C
1.8 X 107 J
D
2.3 X 107 J 4.6 The power dissipated in an a.c. circuit with an r.m.s. current of 5A, r.m.s. voltage of 10 V and a phase angle of 60o is
Physics JAMB 1997 Q47 ✓ Answer: A
The voltage of the domestic electric supply is represented by the equation V = 311 sin 314.2t. Determine the frequency of the a.c. supply.
A
50.0 Hz
B
100.0 Hz
C
311.0Hz
D
314.2 Hz [ = 3.142]
Physics JAMB 1997 Q48 ✓ Answer: A
In a purely inductive circuit, the current
A
lags behind the voltage in phase by 90o
B
lead the voltage in phase by 90o
C
is in the same phase with the voltage
D
leads the voltage by 180o.
Physics JAMB 1997 Q49 ✓ Answer: B
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 the masses of the products.
Physics JAMB 1997 Q50 ✓ Answer: C
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 start up the nuclear process.
C
Slow down the neutrons and hence sloe\w the nuclear process.
D
Speed up the neutrons and hence speed up the nuclear process. [PAGE 69]