⇦ | ⇨ |
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
Related Questions: - Wave nature of light is verified by
- The string of a pendulum is horizontal.The mass of bob attached to it is m
- A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz.
- The magnifying power of a telescope is 9. When it is adjusted for parallel rays
- Two equal and opposite charges of masses m₁ and m₂ are accelerated
Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Wave nature of light is verified by
- The string of a pendulum is horizontal.The mass of bob attached to it is m
- A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz.
- The magnifying power of a telescope is 9. When it is adjusted for parallel rays
- Two equal and opposite charges of masses m₁ and m₂ are accelerated
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply