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Question
Which of the following is/are true for cathode ray
Options
They travel in straight line.
They have kinetic energy.
They produced fluoresce with certain substance
They are electromagnetic waves.
MCQ
Solution
They travel in straight line.
Explanation:
Cathode rays cast shadows on obstacles in their path, indicating that they are travelling in a straight line. They also produce light when they strike a fluorescent material.
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