A proton and an alpha-particle enter a magnetic field in a direction perpendicular to it. If the force acting on the proton is twice that acting on the alpha-particle , the ratio of their velocities is

A proton and an alpha -particles enters in a uniform magnetic field with same velocity, then ratio of the radii of path describe by them

A proton and an alpha -particles enters in a uniform magnetic field with same velocity, then ratio of the radii of path describe by them

A proton and an alpha particle enter the same magnetic field which is perpendicular to their velocity. If they have same kinetic energy then ratio of radii of their circular path is

A proton and an alpha particle enter the same magnetic field which is perpendicular to their velocity. If they have same kinetic energy then ratio of radii of their circular path is

A proton , a deuteron and an alpha -particle enter a magnetic field perpendicular to field with same velocity. What is the ratio of the radii of circular paths ?

An alpha - particle enters a magnetic field of 1 T with a velocity 10^(6) m/s in a direction perpendicular to the field . The force on alpha - particle is ________ .

A proton and an alpha- particle enter a uniform magnetic field at right angles to the field with same speed. The ratio of the periods of alpha- particle and proton is

A proton and an alpha -particle enter a uniform magnetic field perpendicularly with the same speed. How many times if the time period of alpha -particle than that of proton? Deduce the expression for the ratio of the radii of the circular paths of two particles.