MCQ
The dimensions of Planck's constant and angular momentum are respectively
- A$M{L^2}{T^{ - 1}}$ and $ML{T^{ - 1}}$
- ✓$M{L^2}{T^{ - 1}}$ and $M{L^2}{T^{ - 1}}$
- C$ML{T^{ - 1}}$ and $M{L^2}{T^{ - 1}}$
- D$ML{T^{ - 1}}$ and $M{L^2}{T^{ - 2}}$
✓
Answer
Correct option: B.
$M{L^2}{T^{ - 1}}$ and $M{L^2}{T^{ - 1}}$
b
(b)
(b)
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
When an air column at $15\,^oC$ and a tunning fork are sounded together then $4$ beats per second are produced, the frequency of the fork is less then that of air column. When the temperature falls to $10\,^oC$ , then the beat frequency decreases by one. The frequency of the fork will be ..... $Hz$ $[V_{sound}$ at $0\,^oC = 332\,m/s]$
→A body is moving along a circular path. How much work is done by the centripetal force?
A particle is rotating in a circle with uniform speed as shown. The angular momentum of the particle w.r.t. origin is .........
In the $s-t$ equation $\left(s=10+20 t-5 t^2\right)$, match the following columns.
→| Colum $I$ | Colum $II$ |
| $(A)$ Distance travelled in $3\,s$ | $(p)$ $-20$ units |
| $(B)$ Displacement in $1\,s$ | $(q)$ $15$ units |
| $(C)$ Initial acceleration | $(r)$ $25$ units |
| $(D)$ Velocity at $4\,s$ | $(s)$ $-10$ units |
Select the relative word for blank. Planet : Sun :: Moon : $............$
→$A$ small cube with mass $M$ starts at rest at point $1$ at a height $4R$, where $R$ is the radius of the circular part of the track. The cube slides down the frictionless track and around the loop. The force that the track exerts on the cube at point $2$ is nearly ......... times the cube's weight $mg$.
→On a long horizontal belt, a child runs to and fro with a speed of $9\,km/h$ (with respect to the belt) between his father and mother located $50\,m$ apart on the moving belt. The belt moves with a speed of $4\,km/h.$ For an observer on the platform the speed of the child in the direction of motion of the belt is.........$km/h$
→The expression for displacement is $x = \sin(5t).$ The expression for acceleration is $...........$
→The slope of the straight line connecting the points corresponding to $(v_2, t_2)$ and $(v_1, t_1)$ on a plot of velocity versus time gives:
→In $\text{SHM:}$
→