The refracted light striking to the side of prism is called:
Refracted ray
Incident ray
Reflected ray
Emergent ray
When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate:
The rod and the paper are oppositely charged
The rod acquires a positive charge
The rod and the paper have the same charges
The rod acquires a negative charge
In SI the unit of charge is:
Joule
Volt
Coulomb
Watt