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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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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Laser beams are used to measure long distance because
- A heavy small sized sphere is suspended by a string of length l.The sphere rotates
- The coefficient of performance of a refrigerator is 5. If the temperature inside
- When ₃Li⁷ nuclei are bombarded by protons, and the resultant nuclei are ₄Be⁸,
- A block of wood weighs 10 N and is resting on an inclined plane. The coefficient
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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