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The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours. The half-life of this radio nuclide is
Options
(a) 10 min
(b) 20 min
(c) 30 min
(d) 40 min
Correct Answer:
30 min
Explanation:
In 4 × T₁/₂, N = (N₀ / 2) × (1 / 2) × (1 / 2) × (1 / 2)
= N₀ / 16 4 × T₁/₂ = 2 hrs.
⇒ T₁/₂ = 30 min
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two point white dots are 1 mm apart on a black paper.
- Three fourth of the active material decays in a radioactive sample in 3/4 sec
- If emf induced in a coil is 2 V by changing the current in it from 8 A to 6 A
- If a magnet is suspended at an angle 30⁰ to the magnetic meridian, the dip needle
- A body is hangfing from a rigid support by an inextensible string of length
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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