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Q.

A rubber ball drops from a height ‘h’. After rebounding twice from the ground, it rises to h/2. The co - efficient of restitution is

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a

${(\frac{1}{2})}^{1 / 2}$

b

${(\frac{1}{2})}^{1 / 6}$

c

$\frac{1}{2}$

d

${(\frac{1}{2})}^{1 / 4}$

answer is C.

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Detailed Solution

$h_{n} = e^{2 n} h$

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