A stone thrown into still water, creates a circular wave pattern moving radially outwards. If r is the distance measured from the centre of the pattern, the amplitude of the wave varies as

Options

(a) r⁻¹/₂
(b) r⁻¹
(c) r⁻²
(d) r⁻³/₂

Correct Answer:

r⁻¹/₂

Explanation:

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