ICSE Class 10 Physics 2013 Solved Paper

Question : 54 of 70

Marks: +1, -0

Why does a bottle of soft drink cool faster when surrounded by ice cubes than by ice cold water, both at

0^{∘} {\C}

Solution:

Because

1 {\gm}

of ice at

0^{∘} {\C}

takes

336 {\J}

of heat energy from the drink to melt into water at

0^{∘} {\C}

. Thus drink loses an additional 336J of heat energy for

1 {\g}

ice at

0^{∘} {\C}

than for

1 {\gm}

ice-cold water at

0^{∘}{\C}

. Therefore cooling produced by

1 {\g}

ice at

0^{∘} {\C}

is more than that by

1 {\gm}

water at

0^{∘} {\C}

Go to Question:

Prev Question

Next Question