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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 particle is released from rest from a tower of height h, i.e,t₁ : t₂ : t₃ is
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- A DC ammeter has resistance 0.1Ω and its current ranges 0-100A. If the range
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Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle is released from rest from a tower of height h, i.e,t₁ : t₂ : t₃ is
- Two charges each equal to 2µ C are 0.5m apart. If both of them exist inside vacuum
- A DC ammeter has resistance 0.1Ω and its current ranges 0-100A. If the range
- A solid sphere of mass M, radius R and having moment of inertia about an axis passing
- A wire having resistance 12Ω is bent in the form of an equilateral triangle.
Topics: Properties of Bulk Matter (130)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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