Rankers Physics

Photoelectric Effects and deBroglie Equation: Practice Problem & Solution

41. The current conduction in a discharge tube is due to: (1999)
Electrons only
+ ve ions and - ve ions
(- ve) ions and electrons
(+ ve) ions, and electrons

Solution Explained:

To solve this problem, we apply the core principles of Photoelectric Effects and deBroglie Equation. Understanding the underlying formula is key to arriving at the correct answer below:

In a gas discharge tube, the applied high voltage ionizes the gas atoms. This creates free electrons and positive ions. Both of these charged particles migrate towards opposite electrodes under the electric field, contributing to the current conduction.

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