| ⇦ | 
| ⇨ |
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: - In a water fall, the water falls from a height of 100 m. If the entire kinetic energy
- If the length of a stretched string is shortened by 4% and the tension is increased
- A thin rod of length L and mass M is bent at its midpoint into two halves
- A tuning fork of frequency x produces 4 beats with a source of 256 Hz and 8 beats
- Zenor breakdown will occur if
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In a water fall, the water falls from a height of 100 m. If the entire kinetic energy
- If the length of a stretched string is shortened by 4% and the tension is increased
- A thin rod of length L and mass M is bent at its midpoint into two halves
- A tuning fork of frequency x produces 4 beats with a source of 256 Hz and 8 beats
- Zenor breakdown will occur if
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