Principle of superposition of waves formation of beats reflection of a standing waves 11Th ISC

Описание: Topic: Beats- derivation of beat frequency and beat interval
Class: class 11 Physics term 2 exam 2026 chapter: waves
In this lecture I have discussed what are beats and derived the formula for beat frequency and beat interval. Beats topic is from waves chapter of class 11 Physics term 2 and this derivation is very important for term 2 exams in 2026


Beat is produced when two waves of nearby frequencies superimpose when they travel in the same path. This causes a periodic variation of intensity of the resultant wave.
The beat frequency is the number of beats produced per second.
Beat Frequency Formula:
The formula for beat frequency is the difference in frequency of the two superimposed waves.
fb =|f2−f1|
f1 and f2 are the frequency of two waves

Beats formation | expression for beat frequency |class12| waves.
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Topic: standing waves class 11 physics or stationary waves on stretched strings, modes of vibration, harmonics and overtones
Chapter: Waves, class 11 Physics term 2 exam 2026
In this video I have discussed standing waves class 11 physics term 2 topic. Standing waves or stationary waves formed on stretched strings and various modes of vibration and other topics like what are harmonics and what are overtones etc are discussed in this lecture.


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