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Two metal rods 1 and 2 of same lengths have same temperature difference between their ends. Their thermal conductivities are K₁ and K₂ and cross sectional areas A₁ and A₂, respectively. If the rate of heat conduction in rod 1 is four times that in rod 2, then
Options
(a) K₁A₁ = K₂A₂
(b) K₁A₁ = 4K₂A₂
(c) K₁A₁ = 2K₂A₂
(d) 4K₁A₁ = K₂A₂
Correct Answer:
K₁A₁ = 4K₂A₂
Explanation:
Q = 4Q (Given)
K₁A₁ ∆t / L= 4 K₂A₂ ∆t / L
K₁A₁ = 4K₂A₂
Related Questions: - The weight of a body on surface of earth is 12.6 N. When it is raised to a height
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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 weight of a body on surface of earth is 12.6 N. When it is raised to a height
- Two small spherical shells A and B are given positive charges of 9C and 4C
- The voltage of an a.c.supply varies with time (t) as V=120 sin 100 πt the maximum voltage
- In an AC generator, a coil with N turns, all of the same area A and total resistance R,
- A electric dipole is placed at an angle of 30⁰ to a non-uniform electric field.
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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