Question:

The momentum of an electron revolving in $n ^{\text {th }}$ orbit is given by : (Symbols have their usual meanings)

JEE Main

Updated On: Dec 18, 2023

$\frac{ nh }{2 \pi r }$
$\frac{ nh }{2 r }$
$\frac{n h}{2 \pi}$
$\frac{2 \pi r }{ nh }$

Hide Solution

Verified By Collegedunia

The Correct Option is A

Solution and Explanation

Therefore, the correct option is A: $\frac{ nh }{2 \pi r }$

Was this answer helpful?

Top Questions on momentum

An object of mass $m$ is projected from the origin in a vertical $xy$ -plane at an angle $45^\circ$ with the x-axis with an initial velocity $v_0$ . The magnitude and direction of the angular momentum of the object with respect to the origin, when it reaches the maximum height, will be:
- JEE Main - 2025
- Physics
- momentum
View Solution
Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Knowing the initial position $x_0$ and initial momentum $p_0$ is enough to determine the position and momentum at any time $t$ for a simple harmonic motion with a given angular frequency $\omega$ .
Reason (R): The amplitude and phase can be expressed in terms of $x_0$ and $p_0$ .
In the light of the above statements, choose the correct answer from the options given below:
- JEE Main - 2025
- Physics
- momentum
View Solution
The radiation of energy $E$ falls normally on a perfectly reflecting surface. The momentum transferred to the surface is:
- AP EAMCET - 2024
- Physics
- momentum
View Solution
The principle involved in the performance of a circus acrobat is the conservation of
- KEAM - 2024
- Physics
- momentum
View Solution
A particle moves under the influence of a force in the XY-plane such that the components of its linear momentum $\vec{p}$ at any time $t$ are given by $p_x = p \sin t$ and $p_y = p \cos t$ . The angle between $\vec{F}$ and $\vec{p}$ at that time is
- KEAM - 2024
- Physics
- momentum
View Solution

View More Questions

Questions Asked in JEE Main exam

View More Questions

Concepts Used:

Momentum

It can be defined as "mass in motion." All objects have mass; so if an object is moving, then it is called as momentum.

the momentum of an object is the product of mass of the object and the velocity of the object.

Momentum = mass • velocity

The above equation can be rewritten as

p = m • v

where m is the mass and v is the velocity.

Momentum is a vector quantity and the direction of the of the vector is the same as the direction that an object.

The momentum of an electron revolving in nth n ^{\text {th }}nth orbit is given by : (Symbols have their usual meanings)