Which one among the following is true for the speed of sound in a given medium ?
Speed of sound remains same at all frequencies
Speed of sound is faster at higher frequencies
Speed of sound is slower at higher frequencies
Speed of sound is slower at higher wavelengths
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC NDA-1 – 2023
– For a given medium under specific conditions, the speed of sound is constant.
– The relationship v = fλ implies an inverse relationship between frequency (f) and wavelength (λ) for a constant speed (v).
– In contrast, for light waves in a *dispersive* medium (like glass), speed *does* depend on frequency/wavelength. However, for sound waves in typical media like air, water, or solids, dispersion effects related to frequency are usually negligible unless considering very specific materials or high frequencies outside the audible range.