X Rays Are Emitted When the Electrons Hit the Screen $\times$

question 61

Multiple Choice

X rays are emitted when the electrons hit the screen in a cathode ray tube (CRT) ,i.e.,an old TV set.If the shortest wavelength X ray emitted is 3.7 $\times$ 10^-2 nm,then what is the voltage that the electrons are accelerated through in the TV set?

• A)2.1 \(\times\) 10^-23 V
• B)34 kV
• C)27 V
• D)34 V
• E)27 kV

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