Unit of energy is :

(1) $J/\mathrm{sec}$

(2) $Watt-day$

(3) $Kilowatt$

(4) $gm\text{​-​}cm/{\mathrm{sec}}^{2}$

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Which is the correct unit for measuring nuclear radii

(1) Micron

(2) Millimetre

(3) Angstrom

(4) Fermi

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

(1) Velocity of light

(2) Velocity of sound $\left(332\text{\hspace{0.17em}\hspace{0.17em}}m/\mathrm{sec}\right)$

(3) $1\text{\hspace{0.17em}\hspace{0.17em}}km/\mathrm{sec}$

(4) $1\text{\hspace{0.17em}}m/\mathrm{sec}$

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Volt/metre is the unit of

(1) Potential

(2) Work

(3) Force

(4) Electric field intensity

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Difficulty Level:

$Newton/metr{e}^{2}$ is the unit of

(1) Energy

(2) Momentum

(3) Force

(4) Pressure

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The unit of surface tension in SI system is

(1) $Dyne/c{m}^{2}$

(2) $Newton/m$

(3) $Dyne/cm$

(4) $Newton/{m}^{2}$

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The unit of self inductance of a coil is

(2) Henry

(3) Weber

(4) Tesla

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Henry/ohm can be expressed in

(1) Second

(2) Coulomb

(3) Mho

(4) Metre

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The SI unit of momentum is

(1) $\frac{kg}{m}$

(2) $\frac{kg.m}{\mathrm{sec}}$

(3) $\frac{kg.{m}^{2}}{\mathrm{sec}}$

(4) $kg×Newton$

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

(1) $m/\mathrm{sec}$

(2) $m/{\mathrm{sec}}^{2}$

(3) ${m}^{2}/\mathrm{sec}$

(4) $m/{\mathrm{sec}}^{3}$

Concept Questions :-

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