Measusrement
Which quantity is NOT a base quantity?
A) Electric current
B) Temperature
C) Amount of substance
D) Voltage
In SI, the unit of temperature is:
A) kelvin
B) degree Celsius
C) fahrenheit
D) rankine
The unit $\text{N m}$ is equivalent to:
A) joule
B) watt
C) pascal
D) tesla
Which does NOT affect precision directly?
A) Least count
B) Random error
C) Zero error (uncorrected)
D) Unit conversion
If $F=ma$, then $[F]$ in base units is:
A) $\text{kg m s}^{-2}$
B) $\text{kg m s}^{-1}$
C) $\text{kg m}^{2}\text{s}^{-2}$
D) $\text{N s}$
$1\ \text{barn}$ is used to measure:
A) area (nuclear cross-section)
B) energy
C) time
D) volume
Which is a scalar?
A) Displacement
B) Velocity
C) Speed
D) Momentum
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