2022 - JAMB Physics Past Questions and Answers - page 1
Which of the following is a derived unit?
Kilogram
Metre
Newton
Second
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If a bar magnet is divided into two pieces, which of the following statement is correct?
two new magnets are created
the magnetic field of each separate piece becomes stronger
the electric field is created
the bar magnet is demagnetized
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Consider the wave equation y = 5mm sin [1cm\(^{-1}\)x - 60s\(^{-1}\)t]. The wave number is?
0.1 cm\(^{-1}\)
10cm\(^{-1}\)
1.0cm\(^{-1}\)
2cm\(^{-1}\)
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An object 40 cm high is 30cm from the pinhole camera. If the height of the image formed is 20 cm. What is the distance of the image from the pin height?
15 cm
70 cm
40 cm
50 cm
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A bar magnet is placed near and lying along the axis of a solenoid connected to a galvanometer. The pointer of the galvanometer shows no deflection when?
the magnet is moved towards the stationary solenoid
there is no relative motion
the magnet is moved away from the stationary solenoid
the solenoid is moved away from the stationary magnet
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Why do tyres have treads?
increase weight of tyres
increase friction
increase its longevity
look good
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A car starts from rest and covers a distance of 40 m in 10 s. Calculate the magnitude of its acceleration.
3.20 ms\(^{-2}\)
0.25 ms\(^{-2}\)
0.80 ms\(^{-2}\)
4.00 ms\(^{-2}\)
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The relationship between the coefficient of linear expansion \(\alpha\) and volumetric expansion (\(\gamma\)) is-----------------
\(\gamma\) = \(\alpha ^{-3}\)
\(\gamma\) = \(\alpha\)
3\(\alpha\)
\(\gamma\) = \(\alpha ^{3}\)
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Which of the following is not a consequence of hydrogen bubbles covering the copper plate of a primary cell?
formation of hydrogen bubbles on the electrode
increase in the resistance of the cell
local action
polarization
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A cell whose internal resistance is 0.55\(\Omega\) delivers a current of 4 A to an external resistor. What is the lost voltage of the cell?
4.00 V
2.20 V
0.15 V
8.00 V
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