0.93 watt-hour of energy is supplied to a block of ice weighing 10,gm. It is found that

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10-1.Thermometry, Thermal Expansion and Calorimetry

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$0.93$ $watt-hour$ of energy is supplied to a block of ice weighing $10\,gm.$ It is found that

A

Half of the block melts

B

The entire block melts and the water attains a temperature of $4°C$

C

The entire block just melts

D

The block remains unchanged

Solution

(c) Energy supplied $ = 0.93 \times 3600\,joules$$= 3348 \,joules$

Heat required to melt $10\, gms$ of ice

$ = 10 \times 80 \times 4.18 = 3344\,joules$

Hence block of ice just melts.

Standard 11

Physics

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