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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
Related Questions: - Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
- An electric motor operating on a 60 volt D.C supply draws a current of 10 amp.
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
- An electric motor operating on a 60 volt D.C supply draws a current of 10 amp.
- The sodium nucleus ₁₁Na²³ contains
- An electron of a stationary hydrogen atom passes from the fifth energy level to
- The output of an AND gate is connected to both the inputs of a NOR gate,
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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