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What is frequency in physics?

GeneralClass 12AllAnswered 27 Mar 2026
Answer

Frequency is the number of complete oscillations, cycles, or waves that occur in one second. In physics, it measures how often a repeating event happens per unit of time. For example, if a pendulum swings back and forth 5 times in one second, its frequency is 5 Hz. Frequency applies to sound waves, electromagnetic waves, vibrations, and any periodic motion.

General · Class 12