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If 20% of a radiactive element decays in 10 days, then amount of original material left after 30 days is (approx)
Options
(a) 78%
(b) 62%
(c) 51%
(d) 48%
Correct Answer:
51%
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 secs
- A body of mass m is accelerated uniformly from rest to a speed v in a time T
- You are marooned on a frictionless horizontal plane and cannot exert any horizontal
- In an interference experiment, third bright fringe is obtained at a point
- An alpha nucleus of energy 1/2 mv² bombards a heavy nuclear target of charge Ze
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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