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take three containers label them as ABC put cold water in container a and hot water and container be mix hot and cold water in container c put left hand in container a and right hand in container b now put both the hands in container c ,,,,,. Do both the hands get the same feeling ???

Posted by Vishakha ??? . 5 years, 4 months ago

CBSE > Class 07 > Science

2 answers

Arnav Jain 5 years, 4 months ago

hello

Vishakha ??? . 5 years, 4 months ago

Observation: You will find that to one hand ,the water feels hot and to the other it feels cold. Conclusion: This is because the hand that was in ice cold water has become cold, and when it was placed in water at room temperature, it felt that the water is warm, relative to earlier experience of ice cold water. Similarly the hand that was first in hot water will feel the water at room temperature to be relatively cold. So, we see that the terms hot and cold are only relative terms. There must always be a reference body with respect to which we can say a given body is hot or cold. Therefore, it is important that we use an instrument, rather than our own judgement, to measure temperature. ?

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