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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 ray of light is incident at an angle of incidence i, on one face of a prism
- If A=4i+4j+4k and b=3i+j+4k, then angle between vectors A and B is
- Light of wavelength 500 nm is incident on a metal with work function 2.28 eV.
- Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial.
- The kinetic energy of an electron in the first excited state is
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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