The momentum of alpha-particles moving i...

The momentum of `alpha`-particles moving in a circular path of radius 10 cm in a perpendicular magnetic field of 0.05 tesla will be :

`1.6xx10^(-20)km` m/s

`1.6xx10^(-21)kb` m/s

`1.6xx10^(-19)kg` m/s

`1.6xx10^(-18)kg` m/s

Text Solution

Verified by Experts

The correct Answer is:

`qvB=(mv^(2))/(R)`
`mv=qRB=1.6xx10^(-21)kg` m/sec

Topper's Solved these Questions

TEST PAPERS
FIITJEE|Exercise PHYSICS|747 Videos
SIMPLE HARMONIC MOTION
FIITJEE|Exercise Assignment Problems (Objective) (Level-II)|20 Videos
WORK, ENERGY AND POWER
FIITJEE|Exercise COMPREHENSIONS ( Comprehension-II)|5 Videos

Similar Questions

Explore conceptually related problems

A proton moves on a circular path of radius 6.6 × 10^(-3) m in a perpendicular magnetic field of 0.625 tesla. The De broglie wavlength associated with the proton will be :

A alpha -parhticle moves in a circular path of radius 0.83 cm in the presence of a magnetic field of 0.25 Wb//m^(2) . The de-Broglie wavelength assocaiated with the particle will be

Assertion: If a charged particle is moving on a circular path in a perpendicular magnetic field, the momentum of the particle is not changing. Reason: Velocity of the particle in not changing in the magnetic field.

The radius of circular path of an electron when subjected to a perpendicular magnetic field is

A particle moves in a circular path of radius 0.5 m with a linear speed of 2 ms^(-1) ,its angular speed is

A particle having the same charge as of electron moves in a circular path of radius 0.5 cm under the influence of a magnetic field of 0.5 T. If an electric field of 100V/m makes it to move in a straight path, then the mass of the particle is ( Given charge of electron = 1.6 xx 10^(-19)C )

A proton and an alpha particle move in circular paths in a plane perpendicular to a uniform magnetic field. If the kinetic energy of the two particles is equal, the ratio of the radii of their paths is _________.

An a-particle moves along a circular path of radius 0.83 cm in a magnetic field of 0.25 (Wb//m^2) . The de-Broglie wavelength associated with it will be-

A charged particle is moving in a circular path in uniform magnetic field. Match the following.

FIITJEE-TEST PAPERS-PHYSICS

A boat which has a speed of 6km/h in still water crosses a river of wi...
Text Solution
|
In photons of energy 12.75 eV are passing through hydrogen gas in grou...
Text Solution
|
The momentum of alpha-particles moving in a circular path of radius 10...
Text Solution
|
A cylindrical conductor of length l and inner radius R(1) and outer r...
Text Solution
|
A particle has a rectilinear motion and the figure gives its displacem...
Text Solution
|
Force acting on a particle of mass m moving in straight line varies wi...
Text Solution
|
The current in a wire varies with time according to the equation l=4+2...
Text Solution
|
if rho is the density of the meterial of a wire and sigma is the break...
Text Solution
|
A sphere kept on a rough inclined plane is in equilibrium by a string ...
Text Solution
|
A rectangular loop with a sliding connector of length l is located in ...
Text Solution
|
A, B, C, D, P, and Q are points in a uniform electric field. The poten...
Text Solution
|
A concave mirror of focal length 15 cm is placed in water of refrectiv...
Text Solution
|
An ideal gas expands according to the law PV^(3//2)=constant We conclu...
Text Solution
|
A tank has a hole at its bottom. The time needed to empty the tank fro...
Text Solution
|
A source of sound emitting a note of frequency 200 Hz moves towards an...
Text Solution
|
A lake is covered with ince 2 cm thick.t he temperature of ambient air...
Text Solution
|
A cylindrical hall has a horizontal smooth floor. A ball is projected ...
Text Solution
|
A solid cylinder of mass M is attached to the spring by means of a fri...
Text Solution
|
Two blocks A and B of mass 2 m and m respectively are connected to a m...
Text Solution
|
Two small balls A and B, each of mass m, are joined rigidly at the end...
Text Solution
|