Waves
Madhya Pradesh Board · Class 11 · Physics
Most important questions from Waves for Madhya Pradesh Board Class 11 Physics board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
What is a node in a standing wave?
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Point of zero displacement
A node is a point in a standing wave where the displacement is always zero, representing points of no movement.
What is the relationship between wavelength (λ), frequency (v), and wave speed (v)?
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v = λν
For a travelling wave, the speed equals the distance covered in one period, so v = λ/T. Since frequency ν = 1/T, this can also be written as v = λν. The relation links wave speed, wavelength, and frequency.
What happens to a wave when it is reflected from a rigid boundary?
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Phase change of π (180 degrees)
When a wave is reflected from a rigid boundary, it undergoes a phase change of π, causing a reversal in its displacement.
What is a beat frequency?
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Difference between two close wave frequencies
Beat frequency is the absolute difference between two waves with slightly different frequencies, creating a periodic variation in amplitude.
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