JAMB Physics questions

450 questions with answers and explanations. Tap an option to check yourself.

All JAMB WAEC

Question 401· Temperature and its measurement· JAMB
Which thermometer is suitable for measuring temperatures as low as −60 °C?
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Answer: C. an alcohol thermometer
Explanation and discussion
Question 402· Temperature and its measurement· JAMB
A thermocouple thermometer works because
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Answer: A. an e.m.f. is produced when the junctions of two different metals are at different temperatures
Explanation and discussion
Question 403· Temperature and its measurement· JAMB
The fixed points of the Celsius scale are
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Answer: A. the melting point of pure ice and the boiling point of pure water at standard pressure
Explanation and discussion
Question 404· Temperature and its measurement· JAMB
Mercury is preferred to water as a thermometric liquid mainly because it
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Answer: D. expands uniformly and does not wet glass
Explanation and discussion
Question 405· Temperature and its measurement· JAMB
A temperature of 50 °C in kelvin is:
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Answer: C. 323 K
Explanation and discussion
Question 406· Temperature and its measurement· JAMB
Express −73 °C on the Kelvin scale.
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Answer: B. 200 K
Explanation and discussion
Question 407· Thermal expansion· JAMB
A metal has a linear expansivity of 1.1 × 10⁻⁵ K⁻¹. Find its area expansivity.
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Answer: D. 2.2 × 10⁻⁵ K⁻¹
Explanation and discussion
Question 408· Thermal expansion· JAMB
Thermostats in electric irons usually use
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Answer: A. a bimetallic strip
Explanation and discussion
Question 409· Thermal expansion· JAMB
A metal rod 2 m long has a linear expansivity of 1.2 × 10⁻⁵ K⁻¹. Find its increase in length when heated through 50 K.
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Answer: C. 1.2 × 10⁻³ m
Explanation and discussion
Question 410· Thermal expansion· JAMB
Water has its maximum density at
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Answer: A. 4 °C
Explanation and discussion
Question 411· Thermal expansion· JAMB
A rod 1 m long with linear expansivity 2 × 10⁻⁵ K⁻¹ is heated through 100 K. Find its increase in length.
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Answer: B. 2 × 10⁻³ m
Explanation and discussion
Question 412· Thermal expansion· JAMB
Overhead electric cables sag more in hot weather because they
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Answer: A. expand
Explanation and discussion
Question 413· Thermal expansion· JAMB
The cubic expansivity of a solid is approximately
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Answer: A. three times its linear expansivity
Explanation and discussion
Question 414· Thermal expansion· JAMB
The anomalous expansion of water means that water
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Answer: D. contracts when heated from 0 °C to 4 °C
Explanation and discussion
Question 415· Thermal expansion· JAMB
The real expansion of a liquid in a container is equal to
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Answer: D. its apparent expansion plus the expansion of the container
Explanation and discussion
Question 416· Thermal expansion· JAMB
A bimetallic strip bends when heated because the two metals have different
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Answer: A. linear expansivities
Explanation and discussion
Question 417· Thermal expansion· JAMB
A bimetallic strip bends when heated because
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Answer: C. its two metals expand by different amounts
Explanation and discussion
Question 418· Thermal expansion· JAMB
A metal has linear expansivity 2 × 10⁻⁵ K⁻¹. Its cubic expansivity is about
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Answer: D. 6 × 10⁻⁵ K⁻¹
Explanation and discussion
Question 419· Waves· JAMB
Which of the following is a longitudinal wave?
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Answer: A. sound
Explanation and discussion
Question 420· Waves· JAMB
A wave travels at 340 m/s with a wavelength of 0.5 m. Find its frequency.
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Answer: C. 680 Hz
Explanation and discussion

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JAMB Physics questions

Which thermometer is suitable for measuring temperatures as low as −60 °C?

A thermocouple thermometer works because

The fixed points of the Celsius scale are

Mercury is preferred to water as a thermometric liquid mainly because it

A temperature of 50 °C in kelvin is:

Express −73 °C on the Kelvin scale.

A metal has a linear expansivity of 1.1 × 10⁻⁵ K⁻¹. Find its area expansivity.

Thermostats in electric irons usually use

A metal rod 2 m long has a linear expansivity of 1.2 × 10⁻⁵ K⁻¹. Find its increase in length when heated through 50 K.

Water has its maximum density at

A rod 1 m long with linear expansivity 2 × 10⁻⁵ K⁻¹ is heated through 100 K. Find its increase in length.

Overhead electric cables sag more in hot weather because they

The cubic expansivity of a solid is approximately

The anomalous expansion of water means that water

The real expansion of a liquid in a container is equal to

A bimetallic strip bends when heated because the two metals have different

A bimetallic strip bends when heated because

A metal has linear expansivity 2 × 10⁻⁵ K⁻¹. Its cubic expansivity is about

Which of the following is a longitudinal wave?

A wave travels at 340 m/s with a wavelength of 0.5 m. Find its frequency.