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A parabolic pulse given by equation y ("...

A parabolic pulse given by equation `y ("in cm") = 0.3 - 0.1(x-5t)^(2) (y ge 0)` travelling in a uniform string. The pulse passes through a boundary beyond which its velocity becomes `2.5 m//s`. What will be the amplitude of pulse in this medium after transmission ?

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The correct Answer is:
`0.2 cm`
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