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Heat and Thermodynamics question

2007 · Shift 0 · Q90

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JEE Main
Physics
Heat and Thermodynamics
2007 · Shift 0 · Q90

Heat and Thermodynamics question

2007 · Shift 0 · Q90

JEE MainPhysicsHeat and ThermodynamicsMCQ+4 / −1

One end of a thermally insulated rod is kept at a temperature

{T_1}

and the other at

{T_2}

. The rod is composed of two sections of length

{L_1}

and

{L_2}

and thermal conductivities

{K_1}

and

{K_2}

respectively. The temperature at the interface of the two section is AIEEE 2007 Physics - Heat and Thermodynamics Question 401 English

AIEEE 2007 Physics - Heat and Thermodynamics Question 401 English

A
${{\left( {{K_1}{L_1}{T_1} + {K_2}{L_2}{T_2}} \right)} \over {\left( {{K_1}{L_1} + {K_2}{L_2}} \right)}}$
B
${{\left( {{K_2}{L_2}{T_1} + {K_1}{L_1}{T_2}} \right)} \over {\left( {{K_1}{L_1} + {K_2}{L_2}} \right)}}$
C
${{\left( {{K_2}{L_1}{T_1} + {K_1}{L_2}{T_2}} \right)} \over {\left( {{K_2}{L_1} + {K_1}{L_2}} \right)}}$
D
${{\left( {{K_1}{L_2}{T_1} + {K_2}{L_1}{T_2}} \right)} \over {\left( {{K_1}{L_2} + {K_2}{L_1}} \right)}}$

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