Dual Nature of ...

Electron of mass m and charge e in external field E experiences acceleration

The specific charge of a proton is 9.6 × 10⁷ C kg^-1 . The specific charge of an α -particle will be

A charged oil drop is suspended in uniform field of 3 × 10⁴ Vm^-1,so that it neither falls nor rises. The charge on the drop will be (take, the mass of the charge = 9.9 × 10 ^-15 kg and g = 10 ms ^-2 )

Cathode rays of velocity 10⁶ms ^-1 describe an approximate circular path of radius 1 m in an electric field 300 Vcm^-1. If the velocity of the cathode rays are doubled. The value of electric field so that the rays describe the same circular path, will he

When a high energy UV photon beam enters an electric field, it will be

An α-particle of energy 5 MeV is scattered through 180° by a fixed uranium nucleus. The distance of the closest approach is of the order of

In a region, steady and uniform electric and magnetic fields are present. These two fields are parallel to each other. A charged particle is released from rest in this region. The path of the particle will be a

The matertial used lot making thermionic cathode must have

J J Thomson's cathode rays tube experiment demonstrated that