Question
Noise is measured in which unit?
Answer (Detailed Solution Below)
Option d: Decibel
The correct answer is Decibel
- Noise is measured in Decibels.
- It is used to measure intensity of sound.
- It is the amount of energy passing per unit area per unit time in a direction normal to the area.
- Intensity of sound is directly proportional to the square of amplitude of sound.
- Additional information:
- Watt is the unit of power. Power is the rate of doing work. Watt is represented by W. one watt is equal to one joule per second.
- Faraday is the unit of charge. Faraday constant is equal to one faraday per mole. Electrical charge causes it to experience a force when placed in an electromagnetic field. It can be created when electrons are removed from an object.
- Pascal is the unit of pressure. Pressure is the perpendicular force per unit area. One pascal is equal to one kilogram per metre per second square.
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