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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
- 300j work is done in sliding a 2kg block up an inclined plane of height 10m
- If an electron and a proton have the same de-Broglie wavelength, then the kinetic
- Pure Si at 300 k has equal electrons (nₑ) and hole (nh) concentrations
- Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂
- An A.C source is rated at 220 V, 50 Hz. The time taken for voltage to change
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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