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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: - A super conductor exhibits perfect
- A step-down transformer has 50 turns on secondary and 1000 turns on primary winding.
- An alternating emf given by equation
e=300 sin[(100 π)t] V
- A wire having resistance 12Ω is bent in the form of an equilateral triangle.
- The electron drift speed is small and the change of the electron is also small
Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A super conductor exhibits perfect
- A step-down transformer has 50 turns on secondary and 1000 turns on primary winding.
- An alternating emf given by equation e=300 sin[(100 π)t] V
- A wire having resistance 12Ω is bent in the form of an equilateral triangle.
- The electron drift speed is small and the change of the electron is also small
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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