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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 resistance R draws power P when connected to an AC source. If an inductance
- If the momentum of electron is changed by P, then the de-Broglie wavelength
- A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
- A photosensitive metallic surface has work function, hν₀. If photons of energy
- A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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