R P Goyal and S P Tripathi Solutions for Chapter: Thermionic Emission and Radioactivity, Exercise 2: EXERCISE-12(B)

The diagram in Figure shows a radioactive source $S$placed in a thick lead walled container. The radiations given out are allowed to pass through a magnetic field. The magnetic field (shown as $x$ ) acts perpendicular to the plane of paper inwards. Arrows show the paths of the radiations $A,B$ and $C.$

Name the radiations labelled $A, B$ and $C.$

The diagram in Figure shows a radioactive source $S$placed in a thick lead walled container. The radiations given out are allowed to pass through a magnetic field. The magnetic field (shown as $x$ ) acts perpendicular to the plane of paper inwards. Arrows show the paths of the radiations $A,B$ and $C.$

Explain clearly how you used the diagram to arrive at the answer.

Figure shows a mixed source $R$ of alpha and beta particles in a thick lead walled container. The particles pass through a magnetic field in a direction perpendicular to the plane of paper inwards as shown by $x.$ (a) Show in the diagram how the particles get affected.
[Hint : Alpha particles will deflect to the left while beta particles to the right]

Figure shows a mixed source $R$ of alpha and beta particles in a thick lead walled container. The particles pass through a magnetic field in a direction perpendicular to the plane of paper inwards as shown by $x.$ (a) Show in the diagram how the particles get affected. (b) Name the law used in part (a).
[Hint : Alpha particles will deflect to the left while beta particles to the right]

Figure shows a radioactive source $S$ in a thick lead walled container having a narrow opening. The radiations pass through an electric field between the plates $A$ and $B.$

Complete the diagram to show the paths of $\alpha ,\beta$ and $\gamma$ radiations.

Figure shows a radioactive source $S$ in a thick lead walled container having a narrow opening. The radiations pass through an electric field between the plates $A$ and $B.$

Why is the source $S$ kept in a thick lead walled container with a narrow opening ?

What is the mass number of the nucleus $A$ ?

A certain nucleus $A$ (mass number $238$ and atomic number $92$) is radioactive and becomes a nucleus $,B$ (mass number $234$ and atomic number $90$ ) by the loss of a particle.
 Explain how you arrived at your answer.