Question

Which of the following radiation is most dangerous because of its high penetrating power and high energy?

• A. Alpha particles
• B. Beta particles
• C. Gamma rays
• D. none of these

Answer 1

The correct option is C

Gamma rays

The explanation for the correct answer:

Option (C) - Gamma rays

1. There are three types of radiation of particles - Alpha, Beta, and gamma rays
2. Gamma rays are the most energetic and hence penetrating power is also high.
3. Gamma rays are so dangerous that they can even burn the skin cells while it penetrates.

The explanation for the incorrect options:

1. Option (A) - Alpha particles: Alpha particles have very low penetrating power such that they cannot penetrate into our skin
2. Option (B) - Beta particles: Beta particles have comparable more energy than alpha particles but are less damaging to our skin because their particles produce wide-spaced ionization. So these particles are also less dangerous and can be stopped by a layer of cloth.

Hence, option C is the correct answer.