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Calculate theta(1) and theta(2) in shown...

Calculate `theta_(1)` and `theta_(2)` in shown situation.

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The correct Answer is:
`theta_(1) = 116^(@)C , theta_(2) = 74^(@)C`
In steady state rate of flow of heat in the whole system will be same .
`(KA(200-theta_(1)))/(l) = (2KA(theta_(1) - theta_(2)))/(l) = (15KA(theta_(2)-18))/(l)`
`implies 200- theta_(1) = 2theta_(1) - 2theta_(2)` & `2theta_(1) - 2 theta_(2) = 1.5theta_(2) - 27`
`implies theta_(1) = 116^(@)C , theta_(2) = 74^(@)C`
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ALLEN -GEOMETRICAL OPTICS-EXERCISE - 04 (A)
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  2. Two metal cubes with 3 cm- edges of copper and aluminium are arranged ...

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  3. Calculate theta(1) and theta(2) in shown situation.

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  4. A thermocole cubical icebox of side 30 cm has a thickness of 5.0 cm if...

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  5. An electric heater is used in a room of total wall area 137m^(2) to ma...

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  6. The figure shows the face and interface temperature of a composite sla...

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  7. A lagged stick of cross section area 1 cm^(2) and length 1m is initial...

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  8. Calculate the temperature of the black body from given graph when wave...

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  9. Two bodies A and B have thermal emissivities of 0.01 and 0.81 respecti...

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  10. (i) A poor emitter has a large reflectivity . Explain why. (ii) A co...

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  11. In an industrial process 10 kg of water per hour is to be heated from ...

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  12. Aluminium container of mass of 10 g contains 200 g of ice at-20^(@)C. ...

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  13. The temperature of equal masses of three different liquids A,B and C a...

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  14. A lead bullet just melts when stopped by an obstacle. Assuming that 25...

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  15. The temperature of 100 g of water is to be raised from 24^@C to 90^@C ...

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  16. Answer the following questions based on the p-T phase diagram of carbo...

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  18. A thin tube of uniform cross-section is sealed at both ends. It lies h...

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