JAMB and WAEC Physics questions

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

All JAMB WAEC

Question 581· Optical instruments· WAEC
A converging lens of focal length 5 cm is used as a magnifying glass with the final image at the near point, 25 cm away. Find the magnification.
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Answer: C. 6
Explanation and discussion
Question 582· Optical instruments· JAMB
Find the power of a converging lens of focal length 25 cm.
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Answer: C. +4 D
Explanation and discussion
Question 583· Optical instruments· WAEC
Prism binoculars use right-angled prisms mainly to
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Answer: D. invert the image by total internal reflection
Explanation and discussion
Question 584· Optical instruments· WAEC
The image formed on the screen by a slide projector is
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Answer: C. real, inverted and magnified
Explanation and discussion
Question 585· Optical instruments· JAMB
Long sight (hypermetropia) is corrected with
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Answer: A. a converging lens
Explanation and discussion
Question 586· Optical instruments· JAMB
To use a converging lens as a magnifying glass, the object must be placed
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Answer: B. between the lens and its principal focus
Explanation and discussion
Question 587· Optical instruments· JAMB
An object is placed 60 cm from a converging lens of focal length 20 cm. Find the image distance.
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Answer: C. 30 cm
Explanation and discussion
Question 588· Pressure· JAMB
A mercury manometer shows a difference in levels of 5 cm. Find the pressure difference. (Density of mercury = 13 600 kg/m³)
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Answer: C. 6800 Pa
Explanation and discussion
Question 589· Pressure· JAMB
The pressure at a depth of 5 m in water of density 1000 kg/m³ is: (g = 10 m/s²)
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Answer: D. 50 000 Pa
Explanation and discussion
Question 590· Pressure· WAEC
Petrol can be drawn from a car tank into a can lower down using a tube. This device works mainly because of
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Answer: D. atmospheric pressure
Explanation and discussion
Question 591· Pressure· JAMB
Find the pressure due to sea water at a depth of 2 m. [density = 1030 kg/m³, g = 10 m/s²]
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Answer: D. 20,600 Pa
Explanation and discussion
Question 592· Pressure· WAEC
Find the pressure due to water at a depth of 5 m. (density of water = 1000 kg/m³, g = 10 m/s²)
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Answer: D. 50,000 Pa
Explanation and discussion
Question 593· Pressure· JAMB
The mercury column in a barometer is 76 cm high. Find the atmospheric pressure. (Density of mercury = 13 600 kg/m³.)
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Answer: A. 1.03 × 10⁵ Pa
Explanation and discussion
Question 594· Pressure· JAMB
A siphon works because of
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Answer: B. the difference in pressure caused by atmospheric pressure and the liquid columns
Explanation and discussion
Question 595· Pressure· WAEC
A block of weight 60 N rests on a face of area 0.2 m². The pressure it exerts is
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Answer: B. 300 Pa
Explanation and discussion
Question 596· Pressure· WAEC
A box of weight 600 N rests on an area of 0.2 m². What pressure does it exert?
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Answer: D. 3000 Pa
Explanation and discussion
Question 597· Pressure· WAEC
Which instrument is used to measure atmospheric pressure?
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Answer: C. barometer
Explanation and discussion
Question 598· Pressure· JAMB
A hydraulic press has pistons of area 0.02 m² and 0.5 m². What load can a 100 N force on the small piston support?
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Answer: C. 2,500 N
Explanation and discussion
Question 599· Pressure· WAEC
A diver is 8 m below the surface of a lake. What pressure does the water exert on her? [density of water = 1000 kg/m³, g = 10 m/s²]
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Answer: B. 80 000 Pa
Explanation and discussion
Question 600· Pressure· JAMB
Dams are built thicker at the bottom than at the top because
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Answer: D. water pressure increases with depth
Explanation and discussion

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JAMB and WAEC Physics questions

A converging lens of focal length 5 cm is used as a magnifying glass with the final image at the near point, 25 cm away. Find the magnification.

Find the power of a converging lens of focal length 25 cm.

Prism binoculars use right-angled prisms mainly to

The image formed on the screen by a slide projector is

Long sight (hypermetropia) is corrected with

To use a converging lens as a magnifying glass, the object must be placed

An object is placed 60 cm from a converging lens of focal length 20 cm. Find the image distance.

A mercury manometer shows a difference in levels of 5 cm. Find the pressure difference. (Density of mercury = 13 600 kg/m³)

The pressure at a depth of 5 m in water of density 1000 kg/m³ is: (g = 10 m/s²)

Petrol can be drawn from a car tank into a can lower down using a tube. This device works mainly because of

Find the pressure due to sea water at a depth of 2 m. [density = 1030 kg/m³, g = 10 m/s²]

Find the pressure due to water at a depth of 5 m. (density of water = 1000 kg/m³, g = 10 m/s²)

The mercury column in a barometer is 76 cm high. Find the atmospheric pressure. (Density of mercury = 13 600 kg/m³.)

A siphon works because of

A block of weight 60 N rests on a face of area 0.2 m². The pressure it exerts is

A box of weight 600 N rests on an area of 0.2 m². What pressure does it exert?

Which instrument is used to measure atmospheric pressure?

A hydraulic press has pistons of area 0.02 m² and 0.5 m². What load can a 100 N force on the small piston support?

A diver is 8 m below the surface of a lake. What pressure does the water exert on her? [density of water = 1000 kg/m³, g = 10 m/s²]

Dams are built thicker at the bottom than at the top because