Physics - Units Measurement - Quiz-1

One femtometer is equivalent to

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$10^{15} m$
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$10^{- 15} m$
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$10^{- 12} m$
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$10^{12} m$

If the unit of length and force be increased four times, then the unit of energy is

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Increased 4 times
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Increased 8 times
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Increased 16 times
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Decreased 16 times

Ampere - hour is a unit of

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Quantity of electricity
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Strength of electric current
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Power
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Energy

The unit of specific resistance is

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Ohm / cm²
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Ohm / cm
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Ohm - cm
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(Ohm - cm)^-1

The binding energy of a nucleon in a nucleus is of the order of a few

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eV
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Ergs
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MeV
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Volts

Parsec is a unit of :

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Distance
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Velocity
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Time
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Angle

The unit of Planck's constant is:

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Joule
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Joule/s
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Joule/m
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Joule-s

Number of base SI units is

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4
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7
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3
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5

SI unit of permittivity is:

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$C^{2} m^{2} N^{- 1}$
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$C^{- 1} m^{2} N^{- 2}$
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$C^{2} m^{2} N^{2}$
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$C^{2} m^{- 2} N^{- 1}$

Which does not has the same unit as others

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Watt-sec
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Kilowatt-hour
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eV
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J-sec

Which of the following system of units is not based on units of mass, length and time alone

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SI
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MKS
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FPS
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CGS

The unit of the coefficient of viscosity in S.I. system is

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$m / k g - s$
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$m - s / k g^{2}$
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$k g / m - s^{2}$
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$k g / m - s$

The unit of Young’s modulus is

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$N m^{2}$
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$N m^{- 2}$
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Nm
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$N m^{- 1}$

$K i l o w a t t - h o u r$ is a unit of

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Electrical charge
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Energy
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Power
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Force

In which of the following systems of the unit, Weber is the unit of magnetic flux?

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CGS
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MKS
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SI
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None of these

The dimensional formula of the coefficient of thermal conductivity is :

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$[M^{1} L^{1} T^{- 3} K^{- 1}]$
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$[M^{3} L^{- 1} T^{- 3} K]$
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$[M^{1} L^{- 3} T^{- 1} K^{- 1}]$
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$[M^{1} L^{1} T^{- 3} K]$

If L,Q,R represent inductance, charge and resistance respectively, the units of

[This question includes concepts from 12th syllabus]

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$\frac{Q R}{L}$ will be those of current
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$\frac{Q^{2} R^{3}}{L^{2}}$ will be those of energy
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$\frac{Q L}{R}$ will be those of current
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$\frac{Q^{3} R^{2}}{L}$ will be those of power

The quantity $\frac{1}{2} \in_{0} E^{2}$ has dimensional formula same as [This question includes concepts from 12th syllabus]

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$\frac{1}{2} C V^{2}$
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$\frac{1}{2} L I^{2}$
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$\frac{1}{2} \frac{B^{2}}{μ_{0}}$
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Power

A light-year is a unit of:

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Time
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Mass
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Distance
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Energy

The magnitude of any physical quantity:

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depends on the method of measurement.
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does not depend on the method of measurement.
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is more in the SI system than in the CGS system.
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is directly proportional to the fundamental units of mass, length and time.

Which of the following is not equal to watt ?

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Joule/second
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Ampere $\times$ volt
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(Ampere)² $\times$ ohm
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Ampere/volt

Newton–second is the unit of

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Velocity
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Angular momentum
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Momentum
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Energy

Which of the following is not represented in correct unit

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$\frac{Stress}{Strain} = N / m^{2}$
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Surface tension = $N / m$
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Energy $= k g - m / \sec$
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Pressure $= N / m^{2}$

One second is equal to :

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1650763.73 time periods of $K r$ clock
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652189.63 time periods of $K r$ clock
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1650763.73 time periods of $C s$ clock
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9192631770 time periods of $C s$ clock

One nanometre is equal to:

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$10^{9} m m$
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$10^{- 6} c m$
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$10^{- 7} c m$
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$10^{- 9} c m$

A micron is related to centimetre as

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$1 m i c r o n = 10^{- 8} c m$
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$1 m i c r o n = 10^{- 6} c m$
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$1 m i c r o n = 10^{- 5} c m$
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$1 m i c r o n = 10^{- 4} c m$

The unit of power is :

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Joule
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Joule per second only
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Joule per second and watt both
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Only watt

A suitable unit for gravitational constant is:

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$k g - m \sec^{- 1}$
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$N m^{- 1} \sec$
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$N m^{2} k g^{- 2}$
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$k g m \sec^{- 1}$

SI unit of pressure is

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Pascal
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$D y n e s / c m^{2}$
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cm of Hg
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Atmosphere

The unit of angular acceleration in the SI system is

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$N k g^{- 1}$
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$m s^{- 2}$
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$r a d s^{- 2}$
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$m k g^{- 1} K$

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Practice Physics Quiz Questions and Answers

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Practice Physics Quiz Questions and Answers

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