Step-by-step explanation:
Repeater:
- It is used for the regeneration and transmission in case the previously transmitted signal is weak .
- It takes higher input power , to provide lower output power .
- It uses a static environment .
- It is used for the reduction or elimination of noise .
- It works on the the physical layer of OSI model.
Amplifier:
- It is basically used to increase the amplitude or the strength of the signal .
- It takes lower input power , to provide higher output power .
- It uses in a mobile and remote network .
- It increases the amplitude of the signal of noise .
- It works in wireless communication .