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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 small angled prism of refractive index 1.4 is combined with another small angled prism
- ₆C¹⁴ absorbs an energitic neutron and emits beta particles. The resulting nucleus is
- A metal rod of length l cuts across a uniform magnetic field B with a velocity v.
- Sodium has body centred packing. Distance between two nearest atoms is 3.7 Å.
- A 220 volt and 1000 watt bulb is connected across a 110 volt mains supply.
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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