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Two rods A & B are connected in series a...

Two rods A & B are connected in series as shown in fig. the conductivity of A is `K_1 = 100 w//m-^@C` and conductivity of B is `K_2= 50 w//m-^@C`. The free ends of the rods A & B has temp. `30^@C & 60^@C` respectively the temp. of common meeting point will be

A

`35^@C`

B

`40^@C`

C

`45^@C`

D

`50^@C`

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The correct Answer is:
A
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MOTION-HEAT TRANSFER & THERMAL EXPANSION -EXERCISE - 1
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