| ⇦ | 
| ⇨ |
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 nucleus of mass number 220, initially at rest, emits an α-particle. If the Q-value
- The radius of curvature of the convex face of a plano-convex lens is 12 cm
- For high frequency a capacity offers
- If energy(E), velocity(V) and time(T) are chosen as fundamental quantities,
- The drive shaft of an automobile rotates at 3600 rpm and transmits 80 HP
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A nucleus of mass number 220, initially at rest, emits an α-particle. If the Q-value
- The radius of curvature of the convex face of a plano-convex lens is 12 cm
- For high frequency a capacity offers
- If energy(E), velocity(V) and time(T) are chosen as fundamental quantities,
- The drive shaft of an automobile rotates at 3600 rpm and transmits 80 HP
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