Two metal rods 1 and 2 of same lengths have same temperature difference

Two Metal Rods 1 And 2 Of Same Lengths Have Physics QuestionTwo Metal Rods 1 And 2 Of Same Lengths Have Physics Question

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

AddThis Website Tools
admin:

Related Questions

  1. A light emitting diode(LED) has a voltage drop of 2 volt across it
  2. A astronomical telescope has objective and eye-piece of focal lengths
  3. A missile is fired for maximum range with an initial velocity of 20 m/s
  4. A cricketer can throw a ball to a maximum horizontal distance of 100 m. With the same
  5. A body of weight W newton is at the surface of the earth.