Charges & Magne...

A charged particle with charge q enters a region of constant, uniform and mutually orthogonal fields  with a velocity  perpendicular to both , and comes out without any change in its magnitude or direction. Then 

A charged particle would continue to move with a constant velocity in a region wherein, which of the following conditions is not correct?

The cyclotron frequency v_c is given by 

A charged particle is moving in a cyclotron, what effect on the radius of path of this charged particle will occur when the frequency of the radio frequency field is doubled?

A cubical region of space is filled with some uniform electric and magnetic field. An electron enters the cube across one of its faces with velocity v and a positron enters via opposite face with velocity - v. At this instant, which one of the following is not correct?

A cyclotron is operated at an oscillator frequency of 12 MHz and has a dee radius R = 50 cm. What is the magnitude of the magnetic field needed for a proton to be accelerated in the cyclotron?

If an electron is moving in a magnetic field of 5.4 x 10^-4 T on a circular path of radius 32 cm having a frequency of 2.5 MHz, then its speed will be 

A proton and an α-partide enter in a unifoi magnetic field perpendicularly with same speed. The ratio of time periods of both particle (T_P/T_α) will be

A proton, a deutron and an α-particle with same, kinetic energy enter perpendicularly in a uniform magnetic field, then the ratio of radii of their circular paths is

If an electron enters with a velocity  into a cubical region in a uniform electromagnetic field and the orbit of the electron is found to spiral down inside the cube in plane parallel to x-y plane then the configuration of electric field and magnetic field is 

Which of the following is not correct about cyclotron?

The operating magnetic field for accelerating protons in a cyclotron oscillator having frequency of 12 MHz is (q = 1.6 x 10^-19C, m_p = 1.67 x 10^-27 kg and 1 MeV = 1.6 x 10^-13 j)

In the question number 34, the kinetic energy (in MeV) of the proton beam produced by the accelerator is (radius of dees = 60 cm)

An electron is moving in a cyclotron at a speed of 3.2 x 10⁷ m s^-1 in a magnetic field of 5 x 10^-4 T perpendicular to it. What is the frequency of this electron?
(q = 1.6 x 10^-19 C, m_e = 9.1 x 10^-31 kg)