7A10.30 - Stopping Potential

Stopping potential


PIRA Classification: 7A10.30

Description: Filters (450, 500, 550, 600, 650 nm) are placed on a light source shining on a PASCO phototube. Connected to the apparatus is a voltmeter which displays the stopping potential for a given wavelength of light. Values of h can be measured within a percent or two (click here to see sample data).

Special Instructions: Don't leave the filters on the light source too long.

Condition: Good

Setup time: 2 minutes

Safety Issues: None