HALLWACH AND LENARD EXPERIMENTAL SETUP

THE EXPERIMENTAL SETUP OF HALLWACH AND LENARD:-

• The experimental setup of Hallwach's and Lenard is given in figure.
• Evacuated glass tube is used because electron can flow easily from emitter plate to collector plate.
• In experimental setup of Hallwach's and Lenard there is quartz window is used to pass light( radiation)  and falls on the emitter plate.
•  Commutator  is used for reverse the flow of current or we can say it is used for change the polarity.
• Voltmeter is used for measuring voltage.
• Micro ammeter is used to measuring photoelectric current produced by photoelectric effect.
• Rheostat is used for increasing or decreasing the voltage .
• Battery is used to provide potential.