(a)(i) What is meant by resonance?

(ii) Outline the necessary steps taken in a simple experiment to illustrate top resonance

(iii) Explain why a vibrating tuning fork sounds louder when its stem is pressed against a table top than when held in air.

(b) Explain with the aid of diagrams, how a concave mirror could be used to: (i) Ignite a piece of carbon paper; (ii) produce an exact copy of a picture on a screen.