Answer Happy

3. Alpha particles from 210Po source, having the kinetic energy of 5.3.MeV enter the region between two parallel metallic plates separated by 5 mm. A p.d. of 5000 volts is applied between the plates. The a-particles coming out through a narrow slit on the far side of the plates (of linear dimension 0.5 m) reach a photographic plate, kept at a distance of 0.5 m behind the slit. The deflection of the Q-particles from the central spot on the plates is found to be 2.4 cm. The electric field is then removed and a magnetic induction field of
0.1 T is applied to the a-particles perpendicularly under the same geometry. The deflection on the photographic plate from the central spot is found to be 7.6 cm. Find the specific charge of the a-particles from the above data. (4.813 x 10' Cikg). X