Frequency is the number of complete waves (or cycles) that pass a given point in one second.

 What is Frequency of Waves?

Definition:

Frequency is the number of complete waves (or cycles) that pass a given point in one second.

Explanation:

It tells us how often a wave repeats in a specific time frame. High-frequency waves repeat quickly (more cycles per second), while low-frequency waves repeat slowly. It’s directly related to the energy of a wave, higher frequency means more energy.

Imagine:

Imagine standing by the shore counting how many waves hit your feet each second. If 5 waves hit in one second, that’s a frequency of 5 Hz!

In simple terms:

Frequency is how many times a wave “happens” every second.

Formula:

f = 1 ÷ T

• f = frequency (Hz)

• T = period (s)

Key Points:

• Measured in hertz (Hz) — 1 Hz = 1 wave per second

• Inversely related to period

• Higher frequency = higher pitch or energy

• Determines radio and light wave types

Examples:

• A guitar string vibrating 440 times per second has a frequency of 440 Hz

• A red light wave has a lower frequency than a blue light wave

• Radio stations transmit at specific frequencies (e.g., 101.1 MHz)

Applications:

• 🎧 Music – pitch and sound tuning

• 📻 Radio – tuning to stations by frequency

• 🌈 Light – colors correspond to frequency

• 🧠 Medical scans – EEG monitors brain wave frequencies

• 🧪 Scientific research – analyzing wave behaviors

Question:

What happens to the frequency of a wave if its period increases?

Answer:

If the period increases, frequency decreases, they are inversely related.