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A system S receives heat continuously fr...

A system `S` receives heat continuously from an electric heater of power `10 W`. The temperature of `S` becomes constant at `50^(@)C` when the surrounding temperature is `20^(@)C`. After the heater is switched off, `S` cools from `35.1^(@)C` to `34.9^(@)C` in `1 minute`. the heat capacity of `S` is

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The correct Answer is:
`[1500 J//^(@)C]`
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PHYSICS GALAXY - ASHISH ARORA-HEAT TRANSFER -Unsolved Numerical Problems for Preparation of NSEP,INPhO&IPhO
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  2. Four spheres A, B, C and D of different metals but all same radius are...

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  6. A metal block with a heater in it is placed in a room at temperature 2...

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  7. In a cylindrical metallic vessel some water is taken and is put on a b...

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  8. A system S receives heat continuously from an electric heater of power...

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  9. In winters ice forms on the surface of a lake. Due to abnormal expansi...

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  10. Two spheres of the same material have radii 1m and 4m and temperature...

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  11. The temperature of the tungsten filament of a 40 watt lamp is 1655^(@)...

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  12. A cubical tank of water of volume 1m^(3) is kept at a constant tempera...

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  13. Find the temperature distribution in the space between two coaxial cyl...

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  14. A cube a = 3.0 cm on each side radiates energy at the rate of P = 20 J...

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  15. Solve the foregoing problem for the case of two concentric spheres of ...

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  16. A long tungsten heater wire is rated at 3 kWm^(-1) and is 5.0 xx 10^(-...

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  17. A constant electric current flows along a uniform wire with cross-sect...

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  18. An iron boiler with walls 1.25 cm thick contains water at atmospheric ...

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  19. A thin wire of length l=50cm and area of cross-section S=3xx10^(-4)m^(...

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  20. In the figure-4.51 shown here, S is a source of heat supplying energy ...

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