| ⇦ | 
| ⇨ |
A black body is at 727⁰C. It emits energy at a rate which is proportional to
Options
(a) (1000)⁴
(b) (1000)²
(c) (727)⁴
(d) (727)²
Correct Answer:
(1000)⁴
Explanation:
According to Stefan’s law, E α T⁴
E α (t + 273)⁴ K [723⁰C = (727 + 273)K]
E α (727 + 273)⁴ K
E α (1000)⁴ K
Related Questions: - If a vector 2i+3j+8k is perpendicular to the vector 4j-4i+αk, then value of α is
- The half life of radium is 1620 yr and its atomic weight is 226 kg per kilo mol.
- A galvanometer of 50 Ω resistance has 25 divisions. A current of 4×10⁻⁴ A gives
- A block of mass m moving at a velocity v collides with another block of mass 2m
- A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz.
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If a vector 2i+3j+8k is perpendicular to the vector 4j-4i+αk, then value of α is
- The half life of radium is 1620 yr and its atomic weight is 226 kg per kilo mol.
- A galvanometer of 50 Ω resistance has 25 divisions. A current of 4×10⁻⁴ A gives
- A block of mass m moving at a velocity v collides with another block of mass 2m
- A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz.
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