| ⇦ | 
| ⇨ |
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 electric potential at a point in free space due to a charge Q coulomb is Q x 10¹¹ v
- Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen
- A force of 5 N is acting on an object. Displacement of object is 10 m and the work done
- A planet in a distinct solar system is 10 times more massive than the earth
- A particle of mass 100 g is thrown vertically upwards with a speed of 5 m/s. The work
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The electric potential at a point in free space due to a charge Q coulomb is Q x 10¹¹ v
- Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen
- A force of 5 N is acting on an object. Displacement of object is 10 m and the work done
- A planet in a distinct solar system is 10 times more massive than the earth
- A particle of mass 100 g is thrown vertically upwards with a speed of 5 m/s. The work
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