| ⇦ | 
| ⇨ |
A sample of radioactive element has a mass of 10 gram at an instant t=0. The approximate mass of this element in the sample after two mean lives is
Options
(a) 2.50 gram
(b) 3.70 gram
(c) 6.30 gram
(d) 1.35 gram
Correct Answer:
1.35 gram
Explanation:
M = M₀ e-λt
Since, t = 2/λ, we get
M = 10 × e-λ × (2/λ) = 10 e⁻² = 1.35 gram
Related Questions: - Sound production from tape recorder makes use of
- 300j work is done in sliding a 2kg block up an inclined plane of height 10m
- A nucleus ᴢXᴬ emits an α- particle with velocity v. The recoil speed of the daughter
- Number of spectral lines in hydrogen atom is
- The length of an elastic string is a metre when the longitudinal tension is 4N and b
Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Sound production from tape recorder makes use of
- 300j work is done in sliding a 2kg block up an inclined plane of height 10m
- A nucleus ᴢXᴬ emits an α- particle with velocity v. The recoil speed of the daughter
- Number of spectral lines in hydrogen atom is
- The length of an elastic string is a metre when the longitudinal tension is 4N and b
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