Which of the following rays has the highest capacity to ionise gases?
(a) α-ray
(b) γ-ray
(c) β-ray
(d) light ray
WBBSE
Class X
Physical Science
Atomic Nucleus
01 Mark
2025
(a) α-ray
Explanation:
α-rays, β-rays, and γ-rays are types of radioactive rays from the atomic nucleus. α-rays have the highest ionizing power due to their high charge and high mass compared to β-rays and γ-rays.
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