Planck's Constant Experiment Set Up

The Planck's Constant Experiment is designed to determine Planck's constant using Light Emitting Diodes (LEDs). The experiment is based on the photoelectric effect and Einstein's energy equation, E = hf, which relates the energy of emitted photons to their frequency. By measuring the electrical characteristics of LEDs of different colors, students can experimentally determine Planck's constant and understand the relationship between photon energy and frequency. Manufactured by Atico Export India.

Principle

The experiment is based on the photoelectric effect and Einstein's equation E = hf, where E is the photon energy, h is Planck's constant, and f is the frequency of light. Different colored LEDs emit light of different frequencies. By measuring the threshold voltage and electrical parameters of the LEDs, Planck's constant can be determined experimentally.

Objectives

• Determine Planck's constant using LEDs.
• Verify the relationship between photon energy and light frequency.
• Study the photoelectric effect using LEDs.
• Understand Einstein's energy equation.

System Components

Planck's Constant Apparatus :

• Quantity: 1

Power Supply :

• Quantity: 1

Digital Multimeter :

• Quantity: 1

Syringe :

• 20 ml
• Quantity: 1

Built-In Heater :

• Integrated heating element powered by a 12 V input.
• Efficient heating system reaches the required temperature within a few minutes.
• Minimum power requirement of 40 W.

Modular Design :

• Supports testing of LEDs with different colors.
• Allows easy replacement of LED modules for comparative studies.

Built-In Voltage and Temperature Measurement :

• Voltage and temperature measurement points are provided directly on the apparatus.
• Enables convenient monitoring of experimental parameters.