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