Advertisements
Advertisements
प्रश्न
Write true or false for a given statement.
Telephone wires are kept tight between the two poles in summer.
विकल्प
True
False
Advertisements
उत्तर
False.
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
A mercury thermometer makes use of the property of the expansion of liquids on heating.
Write true or false for a given statement.
Land and sea breezes are convection currents of cold and warm air.
Fill in the blank
On heating a body, its temperature _______.
A glass stopper stuck in the neck of a bottle can be removed by pouring hot water on the neck of the bottle. Explain why ?
Describe an experiment to show that air expands on heating.
Name a solid which is a good conductor of heat.
Why is a ventilator provided in a room?
What are the land and sea breezes? Explain their formation.
During day time, air blows from ______ to ______.
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
