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Problem
Problem
A voltage applied to an X-ray tube being increased
η
=
1.5
\eta = 1.5
η
=
1.5
times, the short wave limit of an X-ray continuous spectrum shifts by
Δ
λ
=
26
pm
\Delta\lambda = 26 \text{ pm}
Δ
λ
=
26
pm
. Find the initial voltage applied to the tube.
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