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An X-ray tube produce a continuous spectrum of radiation with its shortest wavelength of $45 \times 10^{-2} A^{\circ}$. The maximum energy of a photon in the radiation in $eV$ is $(h=6.62 \times 10^{-34} \;J-sec, c= 3 \times 10^8 m/sec)$

\[\begin {array} {1 1} (1)\;27,500 & \quad (2)\;22,500  \\ (3)\;17,500 & \quad (4)\;12,500 \end {array}\]

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(1) 27,500
answered Nov 7, 2013 by pady_1

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