| ⇦ | 
| ⇨ |
The power obtained in a reactor using U²³⁵ disintegration is 1000 kW. The mass decay of U²³⁵ per hour is
Options
(a) 10 microgram
(b) 20 microgram
(c) 40 microgram
(d) 1 microgram
Correct Answer:
40 microgram
Explanation:
E = mc² m = E / c² so, mass decay per second.
dm/ dt = 1/c² . dE/ dt = 1/c² (Power in watt)
= 1 / (3 x 10⁸)² x 1000 x 10³
and mass decay per hour = dm/ dt x 60 x 60
= 1 / (3 x 10⁸)² x 10⁶ x 3600 = 4 x 10⁻⁸ kg = 40 microgram
Related Questions: - The radius of a nucleus of mass number A is directly proportional to
- A 36 Ω galvanometer is shunted by resistance of 4 Ω. The percentage of the total current
- Two spherical nuclei have mass numbers 216 and 64 with their radii R₁ and R₂,
- A deutron is bombarded on ₈O¹⁶ nucleus and α-particle is emitted. The product nucleus is
- A galvanometer has a resistance 50Ω. A resistance of 5Ω is connected parallel to it.
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The radius of a nucleus of mass number A is directly proportional to
- A 36 Ω galvanometer is shunted by resistance of 4 Ω. The percentage of the total current
- Two spherical nuclei have mass numbers 216 and 64 with their radii R₁ and R₂,
- A deutron is bombarded on ₈O¹⁶ nucleus and α-particle is emitted. The product nucleus is
- A galvanometer has a resistance 50Ω. A resistance of 5Ω is connected parallel to it.
Topics: Atoms and Nuclei (136)
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