MCQ
$X-$ rays cannot be deflected by means of an ordinary grating due to
- ALarge wavelength
- BHigh speed
- ✓Short wavelength
- DNone of these
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$(1)$ $\rightarrow$ If $d = 7\lambda /2, O$ will be a minima
$(2)$ $\rightarrow$ If $d = 4.3\lambda$ , there will be a total of $8$ minima on $y$ axis.
$(3)$ $\rightarrow$ If $d = 7\lambda , O$ will be a maxima.
$(4)$ $\rightarrow$ If $d = \lambda$ , there will be only one maxima on the screen.
Which is the set of correct statement :

