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The half life of radium is 1620 yr and its atomic weight is 226 kg per kilo mol. The number of atoms that will dacay from its 1g sample per second will be (take, Avogadro’s number, Nᴀ=6.023×10²³ atom/kilo mol)
Options
(a) 3.61×10¹⁰
(b) 31.1×10¹⁵
(c) 3.6×10¹²
(d) 3.11×10¹⁵
Correct Answer:
3.61×10¹⁰
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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- A thermally insulated rigid container contains an ideal gas heated by a filament
- The horizontal component of earth’s magnetic field at a place is 3×10⁻⁴ T
- Two solid discs of radii r and 2r roll from the top of an inclined plane
- Source S₁ is producing, 10¹⁵ photons per second of wavelength 5000Å
- Under the action of a force F=cx, the position of a body changes from 0 to x.The work done
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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