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प्रश्न
Select the correct alternative
Which of the statement is correct
पर्याय
Iron rims are cooled before they are placed on cartwheels
A glass stopper gets tight on warming the neck of the bottle
Telephone wires sag in winter, but become tight in summer
A little space is left between two rails on a railway track
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उत्तर
A little space is left between two rails on a railway track
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
All solids expand by the same amount when heated to the same rise in temperature.
Fill in the blank
Liquids expand _______ than the solids.
Fill in the blank
Black and dull surfaces are ______ of heat.
Describe one experiment to show that liquids expand on heating.
State one application of thermal expansion of liquids.
Select good and bad conductors of heat from the following:
copper, mercury, wood, iron, air, saw-dust, cardboard, silver, plastic, wool.
Explain why we wear woolen clothes in winter.
Why are quilts filled with fluffy cotton?
The bottom of a cooking utensil is painted black. Give the reason.
______ is greater for liquids than solids and it is maximum in gases.
