1. a** Sketch a graph to show how the resistance of a light dependent resistor (LDR) varies when the light intensity incident on it varies.
(1) a** Sketch a graph to show how the resistance of a light dependent resistor (LDR) varies when the light intensity incident on it varies.
(2) b** Suggest what is happening inside the LDR to allow its resistance to change when the incident light intensity varies.