
In order that the heat flows from one part of a solid to another part, what is required?
A. Uniform density
B. Temperature gradient
C. Density gradient
D. Uniform temperature
Answer
160.8k+ views
Hint: In order to solve this problem we need to understand the rate of heat transfer. The rate of flow of heat is the amount of heat that is transferred per unit of time temperature. A temperature gradient is a change in temperature over a specified distance between two isothermal surfaces or two points in a material. Using these terms we are going to find the solution to this question.
Complete step by step solution:
A temperature gradient is always necessary for heat to flow. In anybody, heat energy always flows from the region at a higher temperature to the one at a lower temperature. Within a solid, the heat transfer is always related to its density. The denser the body, the quicker the heat transfer will be.
A presence or absence of a density gradient will still permit the flow of heat within a body but the absence of a temperature gradient prevents heat transfer through it. Hence, in option (b), the presence of a temperature gradient is a necessary condition for the transmission of heat.
Hence, option B is the correct answer.
Note: While solving this problem remember the definition of heat flow, temperature gradient and how these will impact a solid material. In order to flow heat from one part of solid material to another part of solid material, a temperature gradient is required.
Complete step by step solution:
A temperature gradient is always necessary for heat to flow. In anybody, heat energy always flows from the region at a higher temperature to the one at a lower temperature. Within a solid, the heat transfer is always related to its density. The denser the body, the quicker the heat transfer will be.
A presence or absence of a density gradient will still permit the flow of heat within a body but the absence of a temperature gradient prevents heat transfer through it. Hence, in option (b), the presence of a temperature gradient is a necessary condition for the transmission of heat.
Hence, option B is the correct answer.
Note: While solving this problem remember the definition of heat flow, temperature gradient and how these will impact a solid material. In order to flow heat from one part of solid material to another part of solid material, a temperature gradient is required.
Recently Updated Pages
A steel rail of length 5m and area of cross section class 11 physics JEE_Main

At which height is gravity zero class 11 physics JEE_Main

A nucleus of mass m + Delta m is at rest and decays class 11 physics JEE_MAIN

A wave is travelling along a string At an instant the class 11 physics JEE_Main

The length of a conductor is halved its conductivity class 11 physics JEE_Main

Two billiard balls of the same size and mass are in class 11 physics JEE_Main

Trending doubts
JEE Main 2025 Session 2: Application Form (Out), Exam Dates (Released), Eligibility, & More

JEE Main 2025: Derivation of Equation of Trajectory in Physics

Electric Field Due to Uniformly Charged Ring for JEE Main 2025 - Formula and Derivation

Displacement-Time Graph and Velocity-Time Graph for JEE

Uniform Acceleration

Degree of Dissociation and Its Formula With Solved Example for JEE

Other Pages
JEE Advanced Marks vs Ranks 2025: Understanding Category-wise Qualifying Marks and Previous Year Cut-offs

JEE Advanced 2025: Dates, Registration, Syllabus, Eligibility Criteria and More

Units and Measurements Class 11 Notes: CBSE Physics Chapter 1

Motion in a Straight Line Class 11 Notes: CBSE Physics Chapter 2

NCERT Solutions for Class 11 Physics Chapter 1 Units and Measurements

NCERT Solutions for Class 11 Physics Chapter 2 Motion In A Straight Line
