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2024 - JAMB Physics Past Questions and Answers - page 1

1

A rectangular solid black has length 10cm, breadth 5cm and height 2cm. If it lies on a horizontal surface, and has density 100kg/m\\(^3\\), calculate the pressure it exerts on the surface.

A
200 N/m\(^2\)
B
A. 300 N/m\(^2\)
C
B. 100 N/m\(^2\)
D
C. 400 N/m\(^2\)
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2


Under which conditions is work done

A
A man supports a heavy load on his head with hands.
B
A woman holds a pot of water
C
A boy climbs onto a table
D
A man pushes against a stationary petrol tanker
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3


When a bus is accelerating, it must be 

A
changing its speed
B
changing its velocity
C
changing its position
D
changing its direction
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4


Calculate the depth of a swimming pool if the apparent depth is 10cm. ( Refractive index of water = 1.33 )

A
7.5cm
B
10.0cm
C
13.3cm
D
6.87cm
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5


The value of R in the above circuit to make the galvanometer measure 2A is 

A
0.128\(\Omega\)
B
0.256\(\Omega\)
C
0.612\(\Omega\)
D
1.00\(\Omega\)
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6


The power of a convex lens of focal length 20cm is 

A
0.05D
B
0.50D
C
5.00D
D
50.00D
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7


The energy in a moving car is an example of 

A
Mechanical energy
B
Electrical energy
C
Potential energy
D
Kinetic energy
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8


Which of the following is the best as shaving mirror?

A
Concave mirror
B
Convex mirror
C
plane mirror
D
parabolic mirror
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9


How much joules of heat are given out when a piece of iron, of mass 60g and specific heat capacity 460JKg(^{-1})K(^{-1}), cools from 75ºC to 35ºC

A
1000J
B
1050J
C
1067J
D
1104J
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10


An electron falls from an energy level of -5.44eV to another energy level, E. If the emitted photon is of wavelength 5.68 x 10(^{-6})m, calculate the energy change. [ Plank's constant = 6.63 x 10(^{-34})Js, emitted radiation speed = 3.0 x 10(^8)ms(^{-1})]

A
1.49 x 10\(^{-20}\)J
B
1.49 x 10\(^{-19}\)J
C
3.49 x 10\(^{-20}\)J
D
3.49 x 10\(^{-19}\)J
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