Physics
In an optical fibre the signal is transmitted

In a curved path
Due to total internal reflection
In a straight line path
Due to refraction

ANSWER DOWNLOAD EXAMIANS APP

Physics
A dynamo is a device which

Converts mechanical energy into electrical energy
Converts electrical energy into mechanical energy
Creates electrical energy
Creates mechanical energy

ANSWER DOWNLOAD EXAMIANS APP

Physics
It is easier for a man to swim in sea water, than in river water because

The density of sea water is more than the density of river water
The sea is wider than the river
The density of sea water is lesser than the density of river water
The sea is-deeper than the river

ANSWER DOWNLOAD EXAMIANS APP