Why does a bottle of soft drink cool faster ...

ICSE Class 10 Physics 2013 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^{\circ}\ \mathrm{C}

Solution:

Because

1\ \text{gm}

of ice at

0^{\circ}\ \mathrm{C}

takes

336\ \mathrm{J}

of heat energy from the drink to melt into water at

0^{\circ}\ \mathrm{C}

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

1\ \mathrm{g}

ice at

0^{\circ}\ \mathrm{C}

than for

1\ \text{gm}

ice-cold water at

0^{\circ}\mathrm{C}

. Therefore cooling produced by

1\ \mathrm{g}

ice at

0^{\circ}\ \mathrm{C}

is more than that by

1\ \text{gm}

water at

0^{\circ}\ \mathrm{C}

Go to Question:

Prev Question

Next Question