MCQ
The units of angular momentum are
  • A
    $kg - {m^2}/{s^2}$
  • $Joule - s$
  • C
    $Joule/s$
  • D
    $kg - m - {s^2}$

Answer

Correct option: B.
$Joule - s$
b
$=m \vee r W =F \cdot d $

$L  =[k g][m / s][m]  y =m \cdot a \cdot d $

$ L  =k g \cdot m^2 s^{-1} =k g\left( m / s ^2\right)$So, Joule-$s$  $=k g \frac{m^2}{s^2} \times s=k g m^2 s^{-1} .$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Assertion : A disc-shaped magnet is deviated above a superconducting material that has been cooled by liquid nitrogen.

Reason : Superconductors repel a magnet.

The mass of the moon is about $1.2\%$ of the mass of the earth. Compared to the gravitational force the earth exerts on the moon, the gravitational force the moon exerts on earth
The force required to separate two glass plates of area ${10^{ - 2}}{m^2}$ with a film of water $0.05\, mm$ thick between them, is ...... $N$ (Surface tension of water is $70 \times {10^{ - 3}}\,N/m$)
Which of the following is not a unit of time
For germanium crystal, the forbidden energy gap in joules is
The initial pressure and volume of an ideal gas are $P_0$ and $V_0$. The final pressure of the gas when the gas is suddenly compressed to volume $\frac{ V _0}{4}$ will be (Given $\gamma=$ ratio of specific heats at constant pressure and at constant volume)
In the following star circuit diagram (figure), the equivalent resistance between the points $A$ and $H$ will be ..............$r$
Four particle of masses $m, 2m, 3m$ and $4m$ are arranged at the corners of a parallelogram with each side equal to $a$ and one of the angle between two adjacent sides is $60^o$. The parallelogram lies in the $x-y$ plane with mass m at the origin and $4m$ on the  $x-$ axis. The centre of mass of the arrangement will be located at 
Which of the following atoms has the lowest ionization potential
A point object in air is in front of the curved surface of a plano-convex lens. The radius of curvature of the curved surface is $30 \;\mathrm{cm}$ and the refractive index of the lens material is $1.5 .$ then the focal length of the lens (in $\mathrm{cm}$ ) is