X-rays of which of the following wavelengths | vedclass

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Question

(C) Hard $X$-rays are defined as those having high frequency and high penetrating power.Since the frequency $
u$ and wavelength $\lambda$ are related

Vedclass · Accepted Answer

$0.1$

Vedclass · Answer

(C) Hard $X$-rays are defined as those having high frequency and high penetrating power.Since the frequency $
u$ and wavelength $\lambda$ are related by the equation $c = 
u \lambda$,it follows that $
u = \frac{c}{\lambda}$.Therefore,a higher frequency corresponds to a shorter wavelength.Among the given options,$0.1 \ \mathring{A}$ is the shortest wavelength.Thus,$X$-rays with a wavelength of $0.1 \ \mathring{A}$ are the hardest.

$X$-rays of which of the following wavelengths are hardest? (in $\mathring{A}$)

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