⇦ | ⇨ |
A radioactive substance decays to 1/16th of its initial activity in 40 days. The half-life of the radioactive substance expressed in days is
Options
(a) 2.5
(b) 5
(c) 10
(d) 20
Correct Answer:
10
Explanation:
N/N₀ = (1/2)ⁿ
(1/16) = (1/2)ⁿ
n = 4
Half life = t / n = 40 / 4 = 10 day
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In Young’s experiment, the third bright band for light of wavelength 6000Å
- If two vectors are equal in magnitude and their resultant is also equal in magnitude
- A beam of electron passes undeflected through mutually perpendicular
- A body is moving with velocity 30 m/s towards east. After 10 seconds its velocity
- In which of the following systems will the radius of the first orbit (n=1) be minimum?
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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