Model No:IE-103
Determination of Planck's Constant and Work Function of Materials by Photoelectric EffectIt was observed as early as 1905 that most metals under influence of radiation, emit electrons. This phenomenon was termed as photoelectric emission. The energy of emitted photoelectrons can be measured by simple retarding potential techniques as is done in this experiment. When a retarding potential V0 is used to measure kinetic energy of electrons Ee, we have,
Ee = ½(mv2) = eV0
or
V0 = (h/e)(n-f)
So when we plot a graph V0 as a function of n, the slope of the straight line yields h and the intercept of extrapolated point n=0 can give work function f.
Determination of Planck's Constant and Work Function of Materials by Photoelectric EffectIt was observed as early as 1905 that most metals under influence of radiation, emit electrons. This phenomenon was termed as photoelectric emission.
Scope of Learning:
Consists of:
1. Planck’s Constant Power Supply
The Power Supply has in build variable power supply from 0 - 2V DC at 100mA . It has Digital Panel meter for measuring voltage and current.
2.Two Knobs are provided for Zero Adjustment and Voltage control along with the output terminals.
Technical Specifications
2. Photo Sensitive Device
3. Lamp House
4. Filter Set
5. Connecting Wires
The set is complete in all respect, no additional accessory required.
Note : Specifications are subject to change without any prior notice.
Scope of Learning:
Consists of:
1. Planck’s Constant Power Supply
The Power Supply has in build variable power supply from 0 - 2V DC at 100mA . It has Digital Panel meter for measuring voltage and current.
2.Two Knobs are provided for Zero Adjustment and Voltage control along with the output terminals.
Technical Specifications
2. Photo Sensitive Device
3. Lamp House
4. Filter Set
5. Connecting Wires
The set is complete in all respect, no additional accessory required
