The longitudinal waves travel more slowly in_ than in _
Correct answer: C. gases, solids
- A. solids, gas
- B. solids, liquids
- C. gases, solids
- D. liquid, gases
Explanation
Longitudinal waves, such as sound waves, travel slower in gases than in solids. This is because the particles in gases are more spread out, making it harder for the sound waves to transmit energy quickly. In contrast, solids have densely packed particles, allowing for faster energy transfer and wave propagation. Therefore, the correct answer is that longitudinal waves travel more slowly in gases than in solids. Option A is incorrect because it suggests that solids allow for slower wave travel compared to gases. Option B misrepresents the relationship between solids and liquids in terms of wave speed. Option D also incorrectly states that liquids allow for slower wave travel compared to gases. Hence, the only accurate statement is offered by Option C.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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