Question 9: Atoms & Nuclei

Question

Assertion : A beam of charged particles is employed in the treatment of cancer.
Reason : Charged particles on passing through a material medium lose their energy by causing ionization of the atoms along their path.

Accepted Answer

Option A:
Both assertion and reason are true and reason is the correct explanation of assertion.
Using a beam of charged particles, such as protons or heavy-ion beams, is an effective method in cancer treatment. This technique is known as particle therapy or proton therapy. The reason for employing charged particles in cancer treatment lies in their ability to deposit energy specifically at the tumor site through ionization, causing minimal damage to surrounding healthy tissue.
When charged particles pass through a material medium, they interact with the atoms of the medium, primarily by ionizing them. During this process, they lose energy, which is deposited along their path. This ability to precisely control the deposition of energy at a specific location (the tumor) with a sharp "Bragg peak" at the end of their range is what makes them particularly useful in treating cancerous tissues effectively while reducing potential side effects.

Answer

Both assertion and reason are true and reason is the correct explanation of assertion

Answer

Both assertion and reason are true but reason is not the correct explanation of assertion

Answer

Assertion is true but reason is false

Answer

Both assertion and reason are false.

Atoms & Nuclei

Assertion : A beam of charged particles is employed in the treatment of cancer. Reason : Charged particles on passing through a material medium lose their energy by causing ionization of the atoms along their path.

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