Physics
How are γ radiations produced? Mention two common properties of the γ radiations and visible light.
Answer
γ radiations are produced when the daughter or the parent nucleus is in a state of excitation ( i.e., when it has an excess of energy). This extra energy is released in the form of γ radiation.
Two common properties of γ radiations and visible light are as follows —
(i) They both are not deflected by the electric and magnetic fields since they are uncharged particles.
(ii) Speed of γ radiations is same as the speed of light (i.e., 3 x 108 m s-1)
Related Questions
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.
(a) Complete the diagram to show the paths of α, β and γ radiations.
(b) Why is the source S kept in a thick lead walled container with a narrow opening?
(c) Name the radiation which is unaffected by the electrostatic field.
(d) Which radiation is deflected the most. Give reason.
(e) Which among the three radiations causes the least biological damage?
State following four properties each of α, β and γ radiations — (a) nature, (b) charge, (c) mass, and (d) effect of electric field.
What kind of change takes place in a nucleus when a β particle is emitted? Express it by an equation. State whether (a) atomic number, and (b) mass number are conserved in a radioactive β-decay?
(a) An atomic nucleus A is composed of 84 protons and 128 neutrons. The nucleus A emits an α-particle and is transformed into a nucleus B. What is the composition of B?
(b) The nucleus B emits a β-particle and is transformed into a nucleus C. What is the composition of C?
(c) What is the mass number of the nucleus A?
(d) Does the composition of nucleus C change if it emits the γ radiation?