| ⇦ | 
| ⇨ |
A black body at 227⁰C radiates heat at the rate of 7cals/cm²s. At a temperature of 727⁰C, the rate of heat radiated in the same units will be:
Options
(a) 50
(b) 112
(c) 80
(d) 60
Correct Answer:
112
Explanation:
According to Stefan’s law, E ∞ σT⁴, T₁ = 500 K T₂ = 1000 K
E₂ / E₁ = (T₂ / T₁)⁴ = (1000 / 500)⁴ = 16
E₂ = 16 x 7 = 112 cal/ cm²s
Related Questions: - The input resistance of a silicon transistor is 100 W. Base current is changed
- A parallel plate condenser has a uniform electric field E(V/m) in the space between
- What is the amount of energy released by deuterium and tritium fusion?
- The horizontal range and maximum height of a projectile are equal.The angle of projection
- A Si and a Ge diode has identical physical dimensions. The bandgap in Si is larger
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The input resistance of a silicon transistor is 100 W. Base current is changed
- A parallel plate condenser has a uniform electric field E(V/m) in the space between
- What is the amount of energy released by deuterium and tritium fusion?
- The horizontal range and maximum height of a projectile are equal.The angle of projection
- A Si and a Ge diode has identical physical dimensions. The bandgap in Si is larger
Topics: Properties of Bulk Matter (130)
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