Draw symbol and characteristic of LDR. Give material used for it.
Symbol of LDR: -
➢ Material used for LDR
1. Light Dependent Resistor (LDR) is made from a piece of exposed semiconductor material such as cadmium sulphide.
2. Materials used as the semiconductor substrate include, lead sulphide (PbS), lead selenide (PbSe), indium antimonide (InSb) which detect light in the