2022 - JAMB Physics Past Questions and Answers - page 2
Which of the following liquid is a poor conductor of electricity?
Distilled water
Tap water
Sea water
Drinking water
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An isotope has an initial activity of 120 Bq. 6 days later its activity is 15 Bq. What is half-life?
3 days
2 days
1 day
4 days
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In order to remove the error of parallax when taking measurements with a metre rule, the eye should be focused___
slantingly towards the right on the markings
slantingly towards the left on the markings
vertically downwards on the markings
vertically upwards on the markings
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An athlete standing waist-deep in a swimming pool appears to have short legs because of the light__?
diffraction
refraction
reflection
interference
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A tuning fork that has a frequency of 312Hz emits a wave which has a wavelength of 1.10 m. Find the velocity of sound.
312.0 ms\(^{-1}\)
110.0 ms\(^{-1}\)
343.2 ms\(^{-1}\)
686.4 ms\(^{-1}\)
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When the plate surface area of a capacitor increases, ___?
the voltage can withstand increase
the capacitance decreases
the capacitance is unaffected
the capacitance increases
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An electromagnetic relay is a device used for?
reading the magnitude of magnetic flux
controlling another circuit carrying larger current
turning in sports
storing magnetic field
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According to kinetic molecular model in gases,
the particles are closely packed together; they occupy minimum space are usually arranged in a regular pattern
the particles vibrate about fixed positions and are held together by the strong intermolecular bonds between them
the molecules are very far apart and occupy all the spaces made available to them
the particles occur in clusters with molecules slightly further apart
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A current of 0.5 A flows through a resistor when connected to a 40 V battery. How much energy is dispatched in 2 minutes?
2400 J
9600 J
1500 J
1200 J
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For a pear-shaped conductor shown, the concentration of charge on the outside is highest at?
X
Z
Y
K
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