NEET UG PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

1 Medium

1 of 1

Application +4 | -1

Two rods P and Q have equal lengths. Their thermal conductivities are

{K_1}

and

{K_2}

cross sectional areas are

{A_1}

and

{A_2}

. When the temperature at ends of each rod are

{T_1}

and

{T_2}

respectively, the rate of flow of heat through P and Q will be equal, if

View answer and explanation

Correct option: A

\frac{{{A_1}}}{{{A_2}}} = \frac{{{K_2}}}{{{K_1}}}

Option A (

\frac{{{A_1}}}{{{A_2}}} = \frac{{{K_2}}}{{{K_1}}}

) is correct because for the rate of heat flow to be equal, the ratio of areas must be inversely proportional to the ratio of thermal conductivities.

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