An electron of mass m anc charge e initially at rest is accelerated by a constant electric field E. Show that the rate of change of de - Broglie wavelength at time t is `(-h/(Eet^(2)))`

An electron of charge 'e' at rest in accelerted in a uniform electric field E. It covers a distance x. What is the kinetic energy gained by the electron?

A particle of mass m and charge q is placed at rest in a uniform electric field E and then released. The K.E. attained by the particle after moving a distance y is

A partical of mass m1 is travelling with avelocity u1 strikes head-on against partical of mass m2 at rest.After collision the particales move with a velocity v1 and v2 respectively .show that the ratio of decrese in K.E of the partical of mass m1 to its original K.E is given By (4m1m2)/(m1+m2)^2

In the above diagram, a particle of mass"m" and charge(-q) initially moving along X-axis with velocity "v". The length of the plave system is "L" and uniform electric filed between the plates is "E". What is the vertical deflext of the particle at the far edge of the plate?

A body is initially at rest. It Undergoes one-dimensional motion with constant acceleration. The power delivered to it at time t is proportional to(i)t(1)/2 (ii)t(iii)t(2)/3(iv) t^2

A partiale of mass m is moving in a circular path of radius r such that its centripetal acceleration is varying with time t as a_c = k^2rt^2, where k is constant. The power delivered to the particle by the forces acting on it is