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प्रश्न
How can a glass stopper jammed in the neck of a bottle be removed?
उत्तर
We should heat the neck of the bottle because due to heating the neck will expand and loosen the stopper stuck in the neck. In this way, we can easily remove the stopper from the bottle.
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संबंधित प्रश्न
Fill in the blank
The temperature of a normal human body is ________.
When a substance having mass 3 kg receives 600 cal of heat, its temperature increases by 10∘C. What is the specific heat of the substance?
Two bodies at different temperatures are placed in contact. State the direction in which the heat will flow.
What is evaporation? Why does it cause cooling?
Why is a newly made quit warmer than an old one?
A copper wire 10 cm long is heated from 200C to 300C. Find the increase in length of the wire, if coefficient of linear expansion of copper is 1.7 X 10-5oC-1
Give a scientific reason for the following:
In winter the human body covered with a blanket keeps warm.
What is the relation between the latitudinal extent and temperature of a region?
Give reasons why –
an igloo is built as a winter shelter
