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NEET2019PhysicsThermal Properties of MatterActual

Assertion : Coefficient of thermal conductivity of a metal rod is a function of length of the rod. Reason : Longer the rod, larger is the amount of heat conducted.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

D. If both assertion and reason are false.

Step-by-step solution

Coefficient of thermal conductivity depends only on nature of material of the rod and the length of rod is inversely proportional to the amount of heat conducted, Q 1 / x .

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