Question

The quantity of heat which crosses unit area of a metal plate during conduction depends upon (a) the density of the metal (b) the temperature gradient perpendicular to the area (c) the temperature to which metal is heated (d) the area of the metal plate

Name: Problem 31, Chapter 15: Objective Physics for NEET
Uploaded: 2021-10-03T00:35:38-08:00
Duration: 1 min 31 s
Channel: Akshaya Rs
Description: The quantity of heat which crosses unit area of a metal plate during conduction depends upon (a) the density of the metal (b) the temperature gradient perpendicular to the area (c) the temperature to which metal is heated (d) the area of the metal plate

   The quantity of heat which crosses unit area of a metal plate during conduction depends upon
(a) the density of the metal
(b) the temperature gradient perpendicular to the area
(c) the temperature to which metal is heated
(d) the area of the metal plate

Objective Physics for NEET

Abhay Kumar 1st Edition

Chapter 15, Problem 31

Instant Answer

Solved by Expert Akshaya Rs

10/03/2021

Step 1

The law states that the time rate of heat transfer through a material is proportional to the negative gradient in the temperature and to the area, through which the heat is transferred. Show more…

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The quantity of heat which crosses unit area of a metal plate during conduction depends upon (a) the density of the metal (b) the temperature gradient perpendicular to the area (c) the temperature to which metal is heated (d) the area of the metal plate

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Key Concepts

Fourier's Law of Heat Conduction

This fundamental law describes the conduction of heat within a material. It states that the heat flux, which is the quantity of heat crossing a unit area per unit time, is proportional to the negative of the temperature gradient. This law forms the basis for understanding how heat moves through materials, depending mainly on the temperature difference over a given distance and the material's thermal conductivity.

Temperature Gradient

The temperature gradient is the rate of change of temperature with respect to distance in a given direction. In the context of heat conduction, it is the primary factor determining the amount of heat that will flow across a unit area. A steeper temperature gradient results in a larger driving force for the heat to move, according to Fourier's law, influencing the heat transfer rate significantly.

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