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Question
When a sound wave travels from one medium to another, the quantity that remains unchanged is
When a sound wave travels from one medium to another, the quantity that remains unchanged is
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Solution
The correct option is D Frequency
When a particle moves from one medium to other its amplitude increases on decreases. The velocity depends on the nature of medium, so velocity changes. Since velocity changes, wavelength also changes. But the frequency, which is the number of cycles per second remains same.
When a particle moves from one medium to other its amplitude increases on decreases. The velocity depends on the nature of medium, so velocity changes. Since velocity changes, wavelength also changes. But the frequency, which is the number of cycles per second remains same.
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