| ⇦ | 
| ⇨ |
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: - A wave travelling in the +ve x-direction having displacement along y-direction as 1m
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
- The numebr 0 (zero) is required for
- If liquid level falls in a capillary then radius of capillary will be
- The total radiant energy per unit area, normal to the direction of incidence
Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A wave travelling in the +ve x-direction having displacement along y-direction as 1m
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
- The numebr 0 (zero) is required for
- If liquid level falls in a capillary then radius of capillary will be
- The total radiant energy per unit area, normal to the direction of incidence
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