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Minimum de-Broglie wavelength is associated with

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Minimum de-Broglie wavelength is associated with
A. Electron
B. proton
C. `CO_2` molecule
D. `SO_2` molecule
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Correct Answer - D
`lambda=h/"mv"`.For same velocity `lambda prop 1/m`
`SO_2` molecule has least wavelength because their molecular mass is high.
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