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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
- Carbon,silicon and germanium have four valence electrons each. At room temperature
- A particle moves in xy plane according to the equation x = 4t² + 5t + 16 and y = 5t
- If a solid ball of metal has a concentric spherical cavity with in it if the ball
- The energy released by the fission of one uranium atom is 200 MeV.
- which of the following can not be emitted by radioactive substances during their decay?
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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