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A radioactive substance decays to 1/16th of its initial activity in 40 days. The half-life of the radioactive substance expressed in days is
Options
(a) 2.5
(b) 5
(c) 10
(d) 20
Correct Answer:
10
Explanation:
N/N₀ = (1/2)ⁿ
(1/16) = (1/2)ⁿ
n = 4
Half life = t / n = 40 / 4 = 10 day
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- 4 point charges each +q is placed on the circumference of a circle
- 1 Wb/m² equal to
- A transistor is working in common emitter mode. Its amplification factor is 80
- The drive shaft of an automobile rotates at 3600 rpm and transmits 80 HP
- A thin wire of resistance 4 ohm is bent to form a circle. The resistance across
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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