Physics MCQs

Physics

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#129

Which quantity is NOT a base quantity?

A) Electric current

B) Temperature

C) Amount of substance

D) Voltage

Answer:   D
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#130

In SI, the unit of temperature is:

A) kelvin

B) degree Celsius

C) fahrenheit

D) rankine

Answer:   A
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#131

The unit $\text{N m}$ is equivalent to:

A) joule

B) watt

C) pascal

D) tesla

Answer:   A
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#132

Which does NOT affect precision directly?

A) Least count

B) Random error

C) Zero error (uncorrected)

D) Unit conversion

Answer:   D
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#133

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) $\text{N s}$

Answer:   A
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#134

$1\ \text{barn}$ is used to measure:

A) area (nuclear cross-section)

B) energy

C) time

D) volume

Answer:   A
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#135

Which is a scalar?

A) Displacement

B) Velocity

C) Speed

D) Momentum

Answer:   C
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#136

Which set is correctly matched?

A) Power–$\text{J s}^{-1}$

B) Energy–$\text{N s}$

C) Pressure–$\text{N m}$

D) Force–$\text{J m}$

Answer:   A
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