Question

A. Tick the correct option:-
1. Angle of incidence is equal to the angle of reflection.
(a) Always (b) sometimes (c) never
2. Which of the following cannot be charged easily by friction?
(a) A plastic scale (b) a čopper rod (C) a woolen cloth​

Answer 1

Answer:

1.A-ALWAYS

2.B-COPPER ROD

Explanation:

1.A-

ACCORDING TO THE 2 MAIN LAWS OF TEFLECTION OF LIGHT ONE OF IT STATES,THAT THE ANGLE OF INCIDENCE IS ALWAYS EQUAL TO ANGLE OF REFLECTION

2.B

If a copper is rubbed with some material, the charge generated, instead of staying on the copper rod surface, flows throw it and reaches the Earth by conducting through our body. So, a copper rod can not be charged by rubbing or friction.

CHEERS!