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A hole is made in a piece of iron of mas...

A hole is made in a piece of iron of mass 200 g with the help of a 186.5 W drill. If half of the energy consumed is absorbed as heat by the piece of iron, what will be the increase in its temperature in 1 min?
Specific heat of iron = `0.11 cal cdot g^(-1) cdot^(@)C^(-1)`.

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The correct Answer is:
`60.7^(@)C`
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CHHAYA PUBLICATION-FIRST AND SECOND LAW OF THERMODYNAMICS-Exercise - Problem Set - II (Marks 3 or 4)
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  3. A hole is made in a piece of iron of mass 200 g with the help of a 186...

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  4. The speed of a 50 kg heavenly object reduces from 30 km cdot "min"^(-1...

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  5. Sea water is splattered horizontally from a jet at a speed of 10 m cdo...

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  6. Find out the minimum height from which a piece of ice at 0^(@)C should...

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  7. A lead bullet melts on hitting a fixed target. What will be the minimu...

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  8. A certain volume of a gas expands at one standard atmosphere pressure ...

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  9. The volume of 1 mol of a gas is doubled when it expands isothermally a...

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  10. 70 cal of heat is required to increase the temperature of 2 mol of an ...

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  11. What will be the change in internal energy of 128 g of oxygen gas at c...

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  12. What will be the increase in temperature if dry air at 27^(@)C is comp...

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  13. The tyre of a motorcar bursts suddenly when air was being pumped in it...

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  14. Calculate the amount of work done, if 20 g of hydrogen gas is compress...

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  15. Some amount of gas at 27^(@)C is suddenly compressed to 27 times its ...

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  16. In an adiabatic process where pressure is increased by 2/3%, if (Cp)/(...

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  17. The volume of air increases by 2% in its adiabatic expansion. Calculat...

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  18. Air at 27^(@)C and 128 atm pressure is filled in a container in resear...

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  19. Equal volume of mono atomic and diatomic gases of same initial tempera...

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  20. A steam engine delivers 5.4 xx 10^(8)J of work per minute and services...

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