| ⇦ | 
| ⇨ |
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: - In which process, the P-V indicator diagram is a straight line parallel to volume
- The threshold wavelength for photoelectric emission from a material is 4800 Å.
- For a parallel beam of monochromatic light of wavelength λ diffraction is produced
- A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel.The lift starts moving upwards wi
- Three fourth of the active material decays in a radioactive sample in 3/4 sec
Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In which process, the P-V indicator diagram is a straight line parallel to volume
- The threshold wavelength for photoelectric emission from a material is 4800 Å.
- For a parallel beam of monochromatic light of wavelength λ diffraction is produced
- A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel.The lift starts moving upwards wi
- Three fourth of the active material decays in a radioactive sample in 3/4 sec
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