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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: - The threshold wavelength for photoelectric emission from a material is 4800 Å.
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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
- The threshold wavelength for photoelectric emission from a material is 4800 Å.
- The innermost orbit of hydrogen atom has a diameter 1.06Å. The diameter of tenth
- A parallel beam of light of wavelength λ is incident normally on a narrow slit
- A body of mass 0.25 kg is projected with muzzle velocity 100 m/s from a tank
- A ball is thrown vertically downwards from a height of 20 m with an initially
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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