(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

What do you mean by Atomic number

What do you mean by Mass number.

What do you mean by Atomic mass

State two similarities and two dissimilarities between the γ-rays and X-rays.

State the penetrating range of α, β and γ radiations.

Give the relative ionizing power of α, β and γ radiations.

What happens to the atomic number of element when (i) An α -particle, (ii) A β -particle 1 and (iii)  γ-radiation is emitted?

What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?

A radioactive source emits three types of radiations. Name them.
(i) Name the radiations which are charged.
(ii) Name the radiations which are most penetrating.
(iii) Name the radiations which travel with the speed of light.
(iv) Name the radiations which have the largest mass.

What kind of change takes place in a nucleus when a β -particle is emitted?

In following fig.  shows a mixed source S of alpha and beta particles in a thick lead container. The particles pass through a magnetic field in a direction perpendicular to the plane of paper (inwards as shown by x). State and show in the diagram how the particles get affected.

In the following  fig. shows a radioactive source S in a thick lead container. The radiations pass through an electric field between the plates P and Q. Complete the diagram to show the paths of α , β and γ radiations.

Why is the source S placed in a thick lead container?

Define the term radioactivity.