The intensity ratio of two waves is 1: 16. The ratio of their amplitudes is
Correct answer: B. 1:4
- A. 1:16
- B. 1:4
- C. 4:1
- D. 2:1
Explanation
Correct. Intensity (I) is proportional to the square of the amplitude (A), i.e., I ∝ A². Therefore, if I₁/I₂ = 1/16, then A₁/A₂ = √(1/16) = 1/4.
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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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