| ⇦ | 
| ⇨ |
Assuming the sun to have a spherical outer surface of radius r, radiating like a black body at temperature t⁰C, the power received by a unit surface, (normal to the inicident rays) at a distance R from the centre of the sun is
Options
(a) r²σ (t + 273)⁴ / 4πR²
(b) 16 π²r² σt⁴ / R²
(c) r²σ (t + 273)⁴ / R²
(d) 4 πr² σt⁴ / R²
Correct Answer:
r²σ (t + 273)⁴ / R²
Explanation:
Power radiated by the sun at tC
= σ (t + 273)⁴ 4πr²
Power received by a unit surface
σ (t + 273)⁴ 4πr² / 4πR²
r²σ (t + 273)⁴ / R²
Related Questions: - A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm
- A beam of electron passes undeflected through mutually perpendicular
- If the electric field lines is flowing along axis of a cylinder, then the flux
- Which of the following is true for number of spectral lines in going from Lyman series
- The nuclei of which one of the following pairs of nuclei are isotones?
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm
- A beam of electron passes undeflected through mutually perpendicular
- If the electric field lines is flowing along axis of a cylinder, then the flux
- Which of the following is true for number of spectral lines in going from Lyman series
- The nuclei of which one of the following pairs of nuclei are isotones?
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