Planets do not twinkle because
Radiocarbon is produced in the atmosphere as a result of
Nuclear sizes are expressed in a unit named
Light from the Sun reaches us in nearly
Siphon will fail to work if:
Pick out the scalar quantity
Rectifiers are used to convert:
Stars appears to move from east to west because
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
Pa(Pascal) is the unit for
Metals are good conductors of electricity because:
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:
The absorption of ink by blotting paper involves: