Question

Q.2 Answer the following questions in one sentence. (1 marks each)
1. The angle between normal and incident rays is called the
2. Define Earthing​

Answer 1

Answer:

angal of incidence is the angal between normal and incident ray

Answer 2

Answer:

1) Angle of incidence

2)Local earthing is made near the kWh meter in a house. A copper rod is connected to a copper plate which is buried inside the ground. Whenever the current in the circuit exceeds a value, it is sent to the ground with the help of the earthing wire.

Explanation:

1) Angle of incidence - the angle form between the incident ray and the normal is the angle of incidence.