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Longitudinal waves are produced in four ...

Longitudinal waves are produced in four identical rods in different situations. Their mode of vibration are fixed points (with bold point) are shown in the column-2 , their frequencies are given in the column -1 and their wavelength in column-3 . Each of the rod has length 1 m young's modulus of elasticity `2xx10^12 N//m^2` and density `5xx10^(3) kg//m^3`

Pick the correct combination for the least wavelength.

A

(II)(iv)(R)

B

(III)(i)(S)

C

(I)(iv)(R)

D

(IV)(iv)(R)

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