Mirage is due to:
Mirage is due to:
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:
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
Stars appears to move from east to west because
Siphon will fail to work if:
Siphon will fail to work if:
Radiocarbon is produced in the atmosphere as a result of
Radiocarbon is produced in the atmosphere as a result of
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
Which of the following terms is not used in the field of physics?
Which of the following terms is not used in the field of physics?
Light year is a unit of
Light year is a unit of
Nuclear sizes are expressed in a unit named
Nuclear sizes are expressed in a unit named
Light from the Sun reaches us in nearly
Light from the Sun reaches us in nearly
The absorption of ink by blotting paper involves:
The absorption of ink by blotting paper involves: