Answer:
close to the mirrors surface
Explanation:
this is because angle of incidence equals angle of reflection
All of them have the same potential energy <span />
D I think .... don’t be mad if I’m wrong
Answer:
Option (A) , (b) and (d) are correct option
Explanation:
According to Coulomb's law electric force between two charges is given by
From the relation we can say that force is directly proportional to magnitude of charges and inversely proportional to distance between them '
So if we increase the distance then force will decrease
Increase if any of the charge get larger
If force is attractive then both the charge will be of different sign and is force is repulsive then both the charges of same sign
From above conclusion we can say that (a), (b) and (d) are correct option
Higher voltage means faster rotation. Changing the voltage polarity changes the direction of the motor.