SSC MTS EXAM

SSC

PHYSICS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Of the main types of radiation emitted from naturally radioactive isotopes, which is the hardest to block?

A	Alpha deca
B	Gamma Decay
C	Beta decay
D	They are all blocked using the same method

Explanation:

Detailed explanation-1: -Gamma radiation: Gamma radiation is a very penetrating type of radiation. It is usually emitted immediately after the ejection of an alpha or beta particle from the nucleus of an atom. Because it has no mass or charge, it can pass through the human body, but it is absorbed by denser materials, such as concrete or lead.

Detailed explanation-2: -Alpha particles have approximately four times the mass of a proton or neutron and approximately 8, 000 times the mass of a beta particle. Because of the large mass of the alpha particle, it has the highest ionizing power and the greatest ability to damage tissue.

Detailed explanation-3: -Shielding: Barriers of lead, concrete, or water provide protection from penetrating gamma rays. Gamma rays can pass completely through the human body; as they pass through, they can cause damage to tissue and DNA.

There is 1 question to complete.