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2008 - JAMB Physics Past Questions and Answers - page 1

1

I. Force (N)

II.Torque (NM)

III. Current (A)

IV. Power (W)

Which of the above are the correct S. I: units of the quantities indicated?

A
I and II only
B
I and III only
C
I, II and III only
D
I, III and IV only
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2

Which of the following is NOT a vector quantity?

A
altitude
B
acceleration
C
displacement
D
weight
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3

If a wheel 1.2 m in diameter rotates at one revolation per second, calculate the velocity of the wheel.

A
3.6 ms-1
B
3.77 ms-1
C
4.0 ms-1
D
7.5 ms-1
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4

I. All the three forces must be concurrent.

II. The upward force is equal to the downward force.

III. The algebraic sum of the moment about any point must be zero.

which of the above conditions must hold for a body acted upon by a system of three coplanar forces equilibrium?

A
I and II only
B
I and III only
C
II and III only
D
I, II and III
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5

What is the frquency of vibration if the balance wheel of a wrist watch makes 90 revolutions in 25 s?

A
0.01 Hz
B
0.04 Hz
C
2.27 Hz
D
3.60 Hz
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6

If a body mass 5kg is thrown vertically upwards with velocity u,at what height will the potential energy equal to the kinetic energy?

A
h =(u)2/g
B
h = (u)2/4g
C
h = (2u)2/g
D
h = (u)2/2g
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7

counting of currency notes with moist fingers is based on the principles of?

A
diffusion
B
cohesion
C
adhesion
D
viscosity
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8

A motorcycle of mass 100kg moves round in a circle of radius 10m with a velocity of 5 ms-1. find the coefficient of friction between the road and the tyres.

A
25.00
B
2.50
C
0.50
D
0.25
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9

A spring of force constant 500 NM-1 is compressed such that its length shortens by 5cm. The energy stored in the spring is?

A
0.625 J
B
6.250 J
C
62.500 J
D
625.000 J
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10

In the hare's apparatus, water rises to a height of 26.5 cm in one limb. if a liquid rises to a height of 20.4 cm in the other limb, what is the relative density of the liquid?

A
0.8
B
1.1
C
1.2
D
1.3
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