Physics - Units Measurement - Quiz-2

The unit of Stefan's constant $σ$ is : [This question includes concepts from Thermal Properties of Matter chapter]

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$W m^{- 2} K^{- 1}$
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$W m^{2} K^{- 4}$
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$W m^{- 2} K^{- 4}$
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$W m^{- 2} K^{4}$

In $S = a + b t + c t^{2}$ , S is measured in metres and t in seconds. The unit of c will be

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None
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m
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$m s^{- 1}$
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$m s^{- 2}$

Joule-second is the unit of :

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Work
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Momentum
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Pressure
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Angular momentum

Unit of energy in SI system is

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Erg
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Calorie
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Joule
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Electron volt

A cube has a numerically equal volume and surface area. The volume of such a cube is :

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216 units
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1000 units
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2000 units
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3000 units

Wavelength of ray of light is $0 .00006 m$ . It is equal to

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$6 m i c r o n s$
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$60 m i c r o n s$
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$600 m i c r o n s$
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$0 .6 m i c r o n s$

Electron volt is a unit of

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Charge
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Potential difference
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Momentum
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Energy

Temperature can be expressed as a derived quantity in terms of any of the following:

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Length and mass
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Mass and time
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Length, mass and time
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None of the above

Unit of power is:

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Kilowatt
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Kilowatt-hour
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Dyne
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Joule

The density of wood is $0 .5 g m / c c$ in the CGS system of units. The corresponding value in MKS units is :

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500
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5
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0.5
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5000

Which is the correct unit for measuring nuclear radii

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Micron
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Millimetre
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Angstrom
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Fermi

Mach number is equal to one when velocity of object is equal to:

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Velocity of light
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Velocity of sound $(332 m / \sec)$
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$1 k m / \sec$
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$1 m / \sec$

Volt/metre is the unit of

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Potential
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Work
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Force
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Electric field intensity

The unit of self inductance of a coil is

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Farad
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Henry
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Weber
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Tesla

Henry/ohm can be expressed in

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Second
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Coulomb
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Mho
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Metre

The velocity of a particle depends upon as $v = a + b t + c t^{2}$ ; if the velocity is in $m / \sec$ , the unit of a will be

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$m / \sec$
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$m / \sec^{2}$
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$m^{2} / \sec$
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$m / \sec^{3}$

One million electron volt $(1 M e V)$ is equal to

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$10^{5} e V$
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$10^{6} e V$
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$10^{4} e V$
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$10^{7} e V$

$E r g - m^{- 1}$ can be the unit of measure for

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Force
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Momentum
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Power
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Acceleration

Which of the following represents a volt :

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Joule/second
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Watt/Ampere
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Watt/Coulomb
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Coulomb/Joule

Tesla is a unit for measuring

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Magnetic moment
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Magnetic induction & Intensity
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Magnetic field lines
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Magnetic pole strength

If u₁ and u₂ are the units selected in two systems of measurement and n₁ and n₂ are their numerical values, then

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$n_{1} u_{1} = n_{2} u_{2}$
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$n_{1} u_{1} + n_{2} u_{2} = 0$
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$n_{1} n_{2} = u_{1} u_{2}$
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$(n_{1} + u_{1}) = (n_{2} + u_{2})$

1 eV is

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Same as one joule
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$1 .6 \times 10^{- 19} J$
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1 V
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$1 .6 \times 10^{- 19} C$

$1 k W h =$

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$1000 W$
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$36 \times 10^{5} J$
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$1000 J$
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$3600 J$

Universal time is based on :

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Rotation of the earth on its axis
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Earth's orbital motion around the Sun
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Vibrations of cesium atom
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Oscillations of quartz crystal

Unit of moment of inertia in MKS system

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$k g \times c m^{2}$
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$k g / c m^{2}$
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$k g \times m^{2}$
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$J o u l e \times m$

Unit of stress is

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$N / m$
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$N - m$
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$N / m^{2}$
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$N - m^{2}$

Unit of magnetic moment is

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$A m p e r e - m e t r e^{2}$
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$A m p e r e - m e t r e$
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$W e b e r - m e t r e^{2}$
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$W e b e r / m e t r e$

Curie is a unit of

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Energy of $γ$ -rays
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Half life
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Radioactivity
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Intensity of $γ$ -rays

Hertz is the unit of

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Frequency
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Force
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Electric charge
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Magnetic flux

One pico Farad is equal to

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$10^{- 24} F$
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$10^{- 18} F$
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$10^{- 12} F$
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$10^{- 6} F$

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Practice Physics Quiz Questions and Answers

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Practice Physics Quiz Questions and Answers

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