14. Why does chromatic aberration occur? Please use 3 content related sentences.

23. A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, the plates are disconnected from the battery. Describe the behavior of the ball. Please use 3 content related sentences.

26.A rubber rod can be charged negatively when it is rubbed with wool. What happens to the charge of the wool?

27. The electric field around a positive charge is shown in the diagram. Describe the nature of these lines. Please use 2 content related sentences