Chapter 19, Problem 8A

Interpretation Introduction

Interpretation:The best characterization of a gamma $\left(\gamma \right)$ ray has to be given.

Concept introduction:Gamma rays are form of energy that does not have any mass or charge. The symbol of gamma ray is $\gamma .$ These are produced by supernova explosions and by decay of radioactive materials.

Answer to Problem 8A

The best characterization of a gamma $\left(\gamma \right)$ ray is a high-energy photon of light. The correct option is (e).

Explanation of Solution

Light with shortest wavelengths and higher energy frequency in the electromagnetic spectrum is called as gamma radiation/gamma rays. They are one form of energy with zero mass and no charge. They travel at the speed of light. High-energy photon of light is the best characterization to identify a gamma ray. The correct option is (e).

Conclusion

Oxygen nucleus $O,$ is stable, hence it is not used to characterize gamma rays. Option (a) is incorrect.

Helium nucleus is an alpha particle $\left(He\right),$ hence it is not used to characterize gamma rays. Option (b) is incorrect.

A particle with the same mass as an electron but with a positive charge is known as positron. Positron $\left(e\right)$ cannot be used to characterize a gamma ray. Option (c) is incorrect.

An electron is a subatomic particle with negligible mass with negative charge $\left(e^{-}\right).$ They are not used in the characterization of gamma ray and hence, option (d) is incorrect.