| ⇦ | 
| ⇨ |
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: - A luminous object is seperated from a screen by distance d. A convex lens
- Copper and carbon wires are connected in series and the combined resistor is kept
- A source is moving towards an observer with a speed of 20 m/s and having frequency
- Young’s modulus of perfectly rigid body material is
- The potential energy of a 1 kg particle free to move along the x-axis is given by
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A luminous object is seperated from a screen by distance d. A convex lens
- Copper and carbon wires are connected in series and the combined resistor is kept
- A source is moving towards an observer with a speed of 20 m/s and having frequency
- Young’s modulus of perfectly rigid body material is
- The potential energy of a 1 kg particle free to move along the x-axis is given by
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