Given below are two statements : Statement (I) : The dimensions o… - Vidyadip

MCQ

Given below are two statements :
Statement (I) : The dimensions of Planck's constant and angular momentum are same.
Statement (II) : In Bohr's model electron revolve around the nucleus only in those orbits for which angular momentum is integral multiple of Planck's constant.
In the light of the above statements, choose the most appropriate answer from the options given below :

A
Both Statement I and Statement II are correct
B
Statement I is incorrect but Statement II is correct
✓
Statement I is correct but Statement II is incorrect
D
Both Statement I and Statement II are incorrect

✓

Answer

Correct option: C.

Statement I is correct but Statement II is incorrect

(C) Statement I is correct but Statement II is incorrect
$E = hf$
$ML^2 T^{-2}=[h] \times\left[T^{-1}\right] $
${[h]=\left[ML^2 T^{-1}\right]} $
$L=[MVR]=\left[ML^2 T^{-1}\right] $
$L=\frac{nh}{2 \pi}$
L is integral multiple of $\frac{ h }{2 \pi}$

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

Explore more

More "SECTION - A [PHYSICS MCQ]" from JEE Main 4-April-2025 Paper - Shift 2→JEE Main 4-April-2025 Paper - Shift 2 — all question types→JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Two condensers, one of capacity $C$ and other of capacity $C/2$ are connected to a $V-$ volt battery, as shown in the figure. The work done in charging fully both the condensers is

A constant volume gas thermometer shows pressure reading of $50 \,cm$ and $90 \,cm$ of mercury at $0^{\circ} C$ and $100^{\circ} C$ respectively. When the pressure reading is $60 \,cm$ of mercury, the temperature is ......... $^{\circ} C$

A long conducting wire having a current $I$ flowing through it, is bent into a circular coil of $N$ turns.Then it is bent into a circular coil of $n$ tums. The magnetic field is calculated at the centre of coils in both the cases. The ratio of the magnetic field in first case to that of second case is:

A wire of cross-sectional area $3\,m{m^2}$ is first stretched between two fixed points at a temperature of $20°C$. Determine the tension when the temperature falls to $10°C$. Coefficient of linear expansion $\alpha = {10^{ - 5}} { ^\circ}{C^{ - 1}}$ and $Y = 2 \times {10^{11}}\,N/{m^2}$ ........ $N$

Weight of $1 \,kg$ becomes $1/6$ on moon. If radius of moon is $1.768 \times {10^6}\,m$, then the mass of moon will be

For two different gases $X$ and $Y,$ having degrees of freedom $f_1$ and $f_2$ and molar heat capacities at constant volume $C_{v_1}$ and $C_{v_2}$ respectively, for adiabatic process , the $\ln P$ versus $\ln V$ graph is plotted as shown :-

In an $E.M.$ wave the average energy density is associated with

A cylindrical bar magnet is kept along the axis of a circular coil. If the magnet is rotated about its axis, then

If the direction of the initial velocity of the charged particle is neither along nor perpendicular to that of the magnetic field, then the orbit will be

By which of the following single load resistance the load bridge should be replaced so that the power to the load remains unchanged ................ $\Omega$