Correct option is D
The correct answer is: D) Nm⁻²
Explanation:
Pressure is defined as force per unit area and is mathematically expressed as:
The SI unit of force is Newton (N), and the SI unit of area is square meter (m²).
Therefore, the SI unit of pressure is Newton per square meter (N/m²), which is also called Pascal (Pa).
Information Booster:
Instruments for Measuring Pressure:
- Barometer: Measures atmospheric pressure.
- Manometer: Measures pressure of enclosed gases.
Real-life Applications of Pressure:
- Hydraulic brakes in vehicles work on Pascal’s Law.
Airplane cabins are pressurized to maintain safe oxygen levels.
Deep-sea divers experience high pressure due to water depth.
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