A shopkeeper serves you cold lassi in a tumbler. By chance, the tumbler had a small leak. Class 7
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A shopkeeper serves you cold lassi in a tumbler. By chance, the tumbler had a small leak. Class 7
A shopkeeper serves you cold lassi in a tumbler. By chance, the tumbler had a small leak. You were given another tumbler by the shopkeeper to put the leaky tumbler in it. Will this arrangement help to keep the lassi cold for a longer time? Explain. Class 7
Answer:
Yes, the arrangement will keep the lassi cold for a longer time. Because the air is a poor conductor of heat, therefore the air trapped between the two tumblers acts as an insulator. It reduces the transfer of heat from the surroundings to the lassi, and helps it to stays cool for a longer period.