JAMB Physics questions: Pressure

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

1. Question 1· Pressure· JAMB

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

   • A68 000 Pa
   • B680 Pa
   • C6800 Pa
   • D13 600 Pa

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2. Question 2· Pressure· JAMB

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

   • A500 Pa
   • B5000 Pa
   • C5 Pa
   • D50 000 Pa

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3. Question 3· Pressure· JAMB

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

   • A206,000 Pa
   • B2,060 Pa
   • C10,300 Pa
   • D20,600 Pa

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4. Question 4· Pressure· JAMB

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

   • A1.03 × 10⁵ Pa
   • B1.03 × 10³ Pa
   • C7.6 × 10⁵ Pa
   • D1.36 × 10⁴ Pa

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5. Question 5· Pressure· JAMB

   A siphon works because of

   • Acapillary action only
   • Bthe difference in pressure caused by atmospheric pressure and the liquid columns
   • Csurface tension only
   • Dthe weight of the tube

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6. Question 6· 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?

   • A50 N
   • B4 N
   • C2,500 N
   • D1,000 N

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7. Question 7· Pressure· JAMB

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

   • Aconcrete is cheaper at the bottom
   • Bwater is heavier at the top
   • Cthe top is exposed to wind
   • Dwater pressure increases with depth

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8. Question 8· Pressure· JAMB

   The pressure at a point in a liquid at rest depends on the

   • Ashape of the container
   • Bdepth and density of the liquid
   • Carea of the container's base
   • Dvolume of the liquid

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9. Question 9· Pressure· JAMB

   A force of 600 N acts on an area of 0.2 m². Find the pressure.

   • A3000 Pa
   • B120 Pa
   • C600 Pa
   • D30 Pa

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10. Question 10· Pressure· JAMB

    In a hydraulic press, the small piston has an area of 0.01 m² and the large piston 0.5 m². A force of 100 N on the small piston produces what force on the large piston?

    • A50 N
    • B2 N
    • C5000 N
    • D500 N

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11. Question 11· Pressure· JAMB

    At sea level, atmospheric pressure supports a mercury column about

    • A1 m high
    • B76 mm high
    • C10 m high
    • D760 mm high

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12. Question 12· Pressure· JAMB

    A force of 1500 N acts on an area of 0.03 m². Find the pressure.

    • A5000 Pa
    • B45 Pa
    • C500 Pa
    • D50 000 Pa

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13. Question 13· Pressure· JAMB

    As one climbs a high mountain, atmospheric pressure

    • Aincreases
    • Bdecreases
    • Cstays the same
    • Ddoubles

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