A proton and an electron having equal velocity are allowed to pass through a uniform magnetic field. Which one of the following statements is correct in this connection?

A proton and an alpha particle having the same kinetic energy are allowed to pass through a uniform magnetic field perpendicular to the direction of their motion. Compare the radii of the paths of the proton and alpha particle.

A proton and an electron are placed in a uniform electric field. Which of the following is correct?

A proton and an electron are placed in a uniform electric field. Which of the following is correct?

A proton and an alpha particle having the same kinetic energy are allowed to pass through a uniform magnetic field perpendicular to their direction of motion. Compare the radii of the paths of proton and alpha particle.

A proton and a deutron having equal momenta enter in a region of uniform magnetic field at right angles to the direction of the field. Depict their trajectories in the field.

An electron and a proton with equal momentum enter perpendicularly into a uniform magnetic field, then

An electron and a proton with equal momentum enter perpendicularly into a uniform magnetic field, then