An electron, moving with a velocity of `5xx10^(7)ms^(-1)`, enters in a magnetic field of `1 "Wb" m^(-1)` at an angle of `30^(@0)`. Calculate the force on the electron.

The wavelength of an electron moving with velocity of 10^(7)ms^(-1) is

A proton moving withh a velocity 2.5xx10^(7)m//s enters a magnetic field of intensity 2.5T making an angle 30^(@) with the magnetic field. The force on the proton is

An electron moving with a velocity of 5 xx 10^(4)ms^(-1) enters into a uniform electirc field and acquires a uniform acceleration of 10^(4)ms^(-2) in the direction of its initial motion. (i) Calculate the time in which the electron would acquire a velocity double of its initial velocity. (ii) How much distance the electron would cover in this time ?

An electron is moving in a cyclotron at a speed of 3.2 xx 10^(7) m s^(-1) in a magnetic field of 5 xx 10^(-4) T perpendicular to it. What is the frequency of this electron? (q=1.6xx10^(-19)C, m_(c)=9.1xx10^(-31)kg)

The de Broglie wavelength of an electron moving with a velocity of 1.5xx10^(8)ms^(-1) is equal to that of a photon find the ratio of the kinetic energy of the photon to that of the electron.

A beam of protons with a velocity of 4 X 10 ^5 ms^(-1) enters a uniform magnetic field of 0.3 T. The velocity makes an angle of 60^@ with the magnetic field. Find the radius of the helical path taken by the proton beam.

An electron having momentum 2.4 xx 10^(-23)" kg m s"^(-1) enters a region of uniform magnetic field of 0.15 T. The field vector makes an angle of 30^(@) with the initial velocity vector of the electron. The radius of the helical path of the electron in the field shall be

(a) A monoenergetic electron beam with electron speed of 5.20xx10^(6)ms^(-1) is subjected to a magnetic field of 1.30xx10^(-4)T , normal to the beam velocity. What is the radius of the circle traced by the beam, given e//m for electron equal 1.76xx10^(11)C.kg^(-1) . (b) Is the formula you employ in (a) valid for calculating radius of the path of 20 MeV electrons beam? If not, in what way is it modified!

Calculate the wavelength of an electron moving with a velocity of 2.05 xx 10^7 ms^(-1) .

Calculate the wavelength of an electron moving with a velocity of 2. 05 xx 10^7 ms^(-1) .