General Knowledge - General Science - Discussion
Discussion Forum : General Science - Nuclear Science (Q.No. 11)
11.
Which of the following has a least penetrating power?
Discussion:
11 comments Page 2 of 2.
Sundar said:
1 decade ago
Gamma rays:
Gamma rays are waves, not particles.
This means that they have no mass and no charge.
Gamma rays have a high penetrating power - it takes a thick sheet of metal such as lead, or concrete to reduce them significantly.
Gamma rays do not directly ionise other atoms, although they may cause atoms to emit other particles which will then cause ionisation.
We don't find pure gamma sources - gamma rays are emitted alongside alpha or beta particles. Strictly speaking, gamma emission isn't 'radioactive decay' because it doesn't change the state of the nucleus, it just carries away some energy.
Gamma rays are waves, not particles.
This means that they have no mass and no charge.
Gamma rays have a high penetrating power - it takes a thick sheet of metal such as lead, or concrete to reduce them significantly.
Gamma rays do not directly ionise other atoms, although they may cause atoms to emit other particles which will then cause ionisation.
We don't find pure gamma sources - gamma rays are emitted alongside alpha or beta particles. Strictly speaking, gamma emission isn't 'radioactive decay' because it doesn't change the state of the nucleus, it just carries away some energy.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers