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A unifrom rope of length L and mass m1ha...

A unifrom rope of length L and mass `m_1`hangs vertically from a rigid support.A block of mass `m_2` is attached to the free end of the rope.A transverse pulse of wavelengh `lambda_1` is produced at the lower end of the rope.The wavelength of the pulse when it reaches the top of the rope is `lambda_2`.The ratio `lambda_1//lambda_2` is :

A

`sqrt((m_1+m_2)/m_1)`

B

`sqrt(m_1/m_2)`

C

`sqrt((m_1+m_2)/m_2)`

D

`sqrt(m_2/m_1)`

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