Find the ratio of radii of the circles covered by a proton and alpha particles when both enter same uniform magnetic field perpendicularly with same kinetic energy.

The magnitude of velocites of two alpha -particle A and b, entering a uniform magnetic field perpendicularly, are in the ratio 6:1. On entering the field, they move along circular paths. Find the ratio of the radii of their paths.

If electron and proton having same momenta enter normally to a magnetic field then

A proton and an alpha particle of the same velocity enter in turn a region of unifrom magnetic field acting a plane perpendicular to the magnetic field. Deduce the ratio of the radii of the circular paths described by the particles. Explain why kinetic energy of the particle after emerging from the magnetic field remains unaltered.

An electron having mass m, charge q and kinetic energy E enters a uniform magnetic field B perpendicularly. Then its frequency of rotation will be

There are two current carrying plannar coils made each from identical wires of length L. C_1 is circular (radius R) and C_2 is square (side a). They are so constructed that they have the same frequency of oscillation when they are placed in the same uniform magnetic field vecB and carry the same current. Find a in terms of R.

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : A proton and an alpha particle having the same kinetic energy are moving in ircular paths in a uniform magnetic field. the radii of the ciruclar paths will be equal Reasons: Any two charged particles having equal kinetic energies and entering a region of uniform magnetic field vecb in a direction perpendicualr to the vecb , will describe circular trajectories of equal radii.

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.

Calculate the ratio of the accelarating potential required to accelrate a proton and and alpha particle to have the same de-Broglie wavelength associated with them