| ⇦ | 
| ⇨ |
The temperature of a metal block is increased from 27⁰C to 84⁰C. The rate of radiated energy from the block will increase approximately
Options
(a) 2 times
(b) 4 times
(c) 8 times
(d) 16 times
Correct Answer:
2 times
Explanation:
By Stefan’s law, E₂/E₁ = [(273 + 84)/(273 + 27)]⁴
⇒ E₁/E₁ = (357/300)⁴ = (119/100)⁴
⇒ E₁/E₁ = (1.19)⁴ ≈ 2.
Related Questions: - A transformer having efficiency of 90% is working on 200 V and 3kW power supply
- An object is placed at a distance of 10 cm from a co-axial combination of two lenses
- A wire of one metre length carries a constant current. The wire is bent to form
- A bullet is shot from a riffle. As a result the rifle recoils.The kinetic energy of riffle
- A particle A suffers on oblique elastic collision with a particle B that
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A transformer having efficiency of 90% is working on 200 V and 3kW power supply
- An object is placed at a distance of 10 cm from a co-axial combination of two lenses
- A wire of one metre length carries a constant current. The wire is bent to form
- A bullet is shot from a riffle. As a result the rifle recoils.The kinetic energy of riffle
- A particle A suffers on oblique elastic collision with a particle B that
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