In sub-atomic physics, one often associates a characteristic wavelength \( \lambda \) with a par...

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In sub-atomic physics, one often associates a characteristic wavelength \( \lambda \) with a particle of mass \( m \). If \( \hbar=\frac{h}{2 \pi} \) ( \( h \) being Plancks constant) and \( c \) is the speed of light, which of the following expression is most likely to be correct one ? (Use formula \( E=h f \) )
(a) \( \lambda=\frac{h c}{m} \)
(b) \( \lambda=\frac{\hbar}{m c^{2}} \)
(c) \( \lambda=\frac{m \hbar}{c} \)
(d) \( \lambda=\frac{\hbar}{m c} \)
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