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JEE Main 2003
Exam
JEE Main
Year
2003
Subject
Physics
Chapter
Thermal Properties of Matter

JEE Main 2003 · Physics · Thermal Properties of Matter

According to Newton's law of cooling, the rate of cooling of a body...

According to Newton's law of cooling, the rate of cooling of a body is proportional to (Δθ)n(\Delta \theta)^{\mathrm{n}}, where Δθ\Delta \theta is the difference of the temperature of the body and the surroundings, and nn is equal to

Options

  1. Atwo
  2. Bthree
  3. Cfour
  4. Done

Correct answer

D. one

Step-by-step solution

dHdt∝(θ2−θ1)=(Δθ)n⇒n=1\frac{\mathrm{dH}}{\mathrm{dt}} \propto\left(\theta_2-\theta_1\right)=(\Delta \theta)^{\mathrm{n}} \Rightarrow \mathrm{n}=1
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