Which of the following quantities has a unit but dimensionless?
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Solution
Angular displacement has unit(degree or radian) but it is dimensionless.
Note : vice-versa is not possible.
The dimensional formula of areal velocity is
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Solution
Areal\: velocity=\frac{area}{time}
The dimensional formula of couple is
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Solution
Dimensionally couple = Torque = Work
Density of liquid is 16.8 g cm-3. Its value in the International System of Units is
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Solution
16.8 gcm-3= 16800 Kgm-3.
Which of the following is the unit of molar gas constant?
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Solution
R=\frac{PV}{nT}=\frac{j}{mol\: k}=jk^{-1}mol^{-1}
The dimensions of torque
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Solution
[Torque] = [Force] [distance]
=MLT-2.L = ML2T-2
The number of significant figures in 0.00060 m is
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Solution
According to rules of significant figures.
The siemen is the SI unit of
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Solution
Conductance,G=\frac{1}{resistance}=mho(\Omega ^{-1}) or Siemens (S)
Watt-hour meter measures
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Solution
W– hr is a unit of energy
Which of the following is not the name of a physical quantity?
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Solution
The meter is a unit and not a physical quantity