GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pa
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Bar
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Watt
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Torr
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Detailed explanation-1: -Out of the four options, we know that pascal, torr and atm are units of pressure. Therefore, dynes is not a unit of pressure.
Detailed explanation-2: -Newton is not the unit of pressure. it is the unit of force. So, the correct option is Newton.
Detailed explanation-3: -The pascal (Pa) is the unit of pressure or stress in the International System of Units (SI). It is named after the scientist and mathematician Blaise Pascal. One pascal is equivalent to 1 newton (N) of force applied over an area of 1 square meter (m2).
Detailed explanation-4: -The SI unit of pressure is pascal (represented as Pa) which is equal to one newton per square metre (N/m2 or kg m-1s-2).
Detailed explanation-5: -So, we can say one Newton is one kgm/s². Pascal is a very small pressure unit and is often used with different prefixes. Common multiples include hectopascal (1 hPa = 100 Pa), kilopascal (1 kPa = 1 000 Pa) and megapascal (1 MPa = 1 000 000 Pa).