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Hard `X` -rays for the study of fractures in bones should have a minimum wavelength of `10^(-11) m`. The accelerating voltage for electrons in `X` -ray machine should beA. `lt 124.2 kV`B. `gt 124.2 kV`C. Between 60 kV and 70 kVD. equal to 100 kVs |
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Answer» Correct Answer - A `V_("max")=(12400xx10^(-10))/(10^(-11))=124 kVrArrVlt124 kV` |
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