Strong x-ray beams can be produced when

A. beta rays are absorbed by bones.
B. alpha rays pass through a thin metal foil.
C. cathode rays strike a metal anode.
D. gamma rays move through a magnetic field.


Answer: C

Physics & Space Science

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The emission lines from O III are called ____ because they are not visible laboratories on Earth due to the much greater pressure of the gas on Earth

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Fill in the blank(s) with the appropriate word(s).

Physics & Space Science