Wavelength, Frequency, Time Period and Amplitude | Physics

Najam Academy

13 Aug 202008:20

Summary

TLDRThis video lecture provides a clear explanation of key wave concepts: amplitude, wavelength, time period, and frequency. Amplitude is defined as the maximum displacement of particles from their mean position, while wavelength refers to the distance between successive wave features. The time period is the duration for one complete wave cycle, and frequency indicates the number of cycles per second. Each concept is illustrated with examples, making it accessible for learners. By understanding these fundamentals, viewers can grasp the essential principles governing wave motion.

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Q & A

What is amplitude in wave motion?
-Amplitude is the maximum displacement of particles from their mean or equilibrium position, representing the height of the wave.
How is amplitude measured?
-Amplitude can be measured by calculating the distance from the peak of the wave to the mean position using a ruler or measuring device.
What is the SI unit of amplitude?
-The SI unit of amplitude is meter.
What is wavelength and how is it represented?
-Wavelength is the distance between successive crests or troughs in a transverse wave, or between compressions and rarefactions in a longitudinal wave, and is represented by the Greek letter lambda (λ).
How can we determine the wavelength of a wave?
-Wavelength can be determined by measuring the length of one crest and one trough for transverse waves, or one compression and one rarefaction for longitudinal waves.
What defines the time period of a wave?
-The time period is defined as the time taken for an oscillating body to complete one wave cycle or one oscillation.
What is the SI unit of time period?
-The SI unit of time period is second.
What is frequency and how is it calculated?
-Frequency is defined as the number of wave cycles or oscillations completed in one second, calculated as the reciprocal of the time period (f = 1/T).
What is the SI unit of frequency?
-The SI unit of frequency is Hertz (Hz).
How are time period and frequency related?
-Time period and frequency are inversely related; as the time period increases, frequency decreases, and vice versa.