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The figure shows the face and interface ...

The figure shows the face and interface temperature of a composite slab containing of four layers of two materials having identical thickness. Under steady state condition, find the value of temperature `theta`.

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The correct Answer is:
`5^(@)C`
`(DeltaQ)/(Deltat) = "same So" (KA(20-10))/(l) = (2KA(10-0))/(l) implies 2 theta = 10 implies theta = 5 ^(@)C`
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ALLEN -GEOMETRICAL OPTICS-EXERCISE - 04 (A)
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  2. An electric heater is used in a room of total wall area 137m^(2) to ma...

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

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

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

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

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

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

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

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

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

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

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

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  14. Two glass bulbs of equal volume are connected by a narrow tube and are...

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

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  16. A closed container of volume 0.02m^3contains a mixture of neon and arg...

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  17. An oxygen cylinder of volume 30 litres has an initial gauge pressure o...

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  18. Figure Show plot of PV//T versus P for 1.00xx10^(-3) kg of oxygen gas ...

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  19. For a gas (R)/(C(P)) = 0.4. For this gas calculate the following (i) A...

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  20. One gram mole of oxygen at 27^@ and one atmospheric pressure is enclos...

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