WAEC Physics questions

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

All JAMB WAEC

Question 361· Waves· WAEC
The spreading of waves round the edge of an obstacle is called
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Answer: D. diffraction
Explanation and discussion
Question 362· Waves· WAEC
The period of a wave with frequency 25 Hz is
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Answer: A. 0.04 s
Explanation and discussion
Question 363· Waves· WAEC
In a longitudinal wave, the particles of the medium vibrate
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Answer: B. along the direction of travel of the wave
Explanation and discussion
Question 364· Waves· WAEC
A wave has a frequency of 50 Hz and a wavelength of 4 m. Its speed is
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Answer: D. 200 m/s
Explanation and discussion
Question 365· Waves· WAEC
Which of these waves is longitudinal?
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Answer: A. sound in air
Explanation and discussion
Question 366· Work, energy and power· WAEC
As a stone falls freely towards the ground, its
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Answer: D. potential energy decreases and kinetic energy increases
Explanation and discussion
Question 367· Work, energy and power· WAEC
A pendulum bob at the lowest point of its swing has maximum
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Answer: B. kinetic energy
Explanation and discussion
Question 368· Work, energy and power· WAEC
Work done by a force is zero when the force is
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Answer: A. perpendicular to the displacement
Explanation and discussion
Question 369· Work, energy and power· WAEC
A 50 kg boy climbs a 4 m staircase in 8 s. His power is (g = 10 m/s²)
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Answer: A. 250 W
Explanation and discussion
Question 370· Work, energy and power· WAEC
A pump raises 300 kg of water through 10 m in 60 s. Find its power. [g = 10 m/s²]
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Answer: C. 500 W
Explanation and discussion
Question 371· Work, energy and power· WAEC
A boy of mass 50 kg climbs a staircase 4 m high in 10 s. His power is (g = 10 m/s²)
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Answer: A. 200 W
Explanation and discussion
Question 372· Work, energy and power· WAEC
A force of 20 N moves a box through 5 m in the direction of the force. The work done is
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Answer: C. 100 J
Explanation and discussion
Question 373· Work, energy and power· WAEC
A pump raises 100 kg of water through 6 m in 30 s. Find its power. (g = 10 m/s²)
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Answer: C. 200 W
Explanation and discussion
Question 374· Work, energy and power· WAEC
A ball of mass 0.5 kg moves at 4 m/s. Its kinetic energy is
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Answer: D. 4 J
Explanation and discussion
Question 375· Work, energy and power· WAEC
The kinetic energy of a 4 kg body moving at 3 m/s is
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Answer: B. 18 J
Explanation and discussion
Question 376· Work, energy and power· WAEC
When a body falls freely, its
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Answer: B. potential energy changes into kinetic energy
Explanation and discussion
Question 377· Work, energy and power· WAEC
A boy lifts a 25 kg bag through a height of 2 m. How much work does he do? [g = 10 m/s²]
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Answer: C. 500 J
Explanation and discussion
Question 378· Work, energy and power· WAEC
In a dynamo the main energy change is from
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Answer: B. mechanical to electrical
Explanation and discussion
Question 379· Work, energy and power· WAEC
Find the kinetic energy of a 2 kg mass moving at 6 m/s.
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Answer: D. 36 J
Explanation and discussion

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WAEC Physics questions

The spreading of waves round the edge of an obstacle is called

The period of a wave with frequency 25 Hz is

In a longitudinal wave, the particles of the medium vibrate

A wave has a frequency of 50 Hz and a wavelength of 4 m. Its speed is

Which of these waves is longitudinal?

As a stone falls freely towards the ground, its

A pendulum bob at the lowest point of its swing has maximum

Work done by a force is zero when the force is

A 50 kg boy climbs a 4 m staircase in 8 s. His power is (g = 10 m/s²)

A pump raises 300 kg of water through 10 m in 60 s. Find its power. [g = 10 m/s²]

A boy of mass 50 kg climbs a staircase 4 m high in 10 s. His power is (g = 10 m/s²)

A force of 20 N moves a box through 5 m in the direction of the force. The work done is

A pump raises 100 kg of water through 6 m in 30 s. Find its power. (g = 10 m/s²)

A ball of mass 0.5 kg moves at 4 m/s. Its kinetic energy is

The kinetic energy of a 4 kg body moving at 3 m/s is

When a body falls freely, its

A boy lifts a 25 kg bag through a height of 2 m. How much work does he do? [g = 10 m/s²]

In a dynamo the main energy change is from

Find the kinetic energy of a 2 kg mass moving at 6 m/s.