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Question
A beam of electron accelerated by a large potential difference ′V′ is made to strike a metal target to produce X-rays. For which of the following values of ′V′, will the resulting X-rays have the lowest minimum wavelength?
A beam of electron accelerated by a large potential difference ′V′ is made to strike a metal target to produce X-rays. For which of the following values of ′V′, will the resulting X-rays have the lowest minimum wavelength?
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Solution
The correct option is D 40 kV
Higher the energy, lower the min wavelength. (attached concept)
As the incoming X-rays are accelerated by higher potential, they gain higher energy and are able to knock out electrons to higher orbits.
These electrons when return to ground state, emit wavelenghts, depending on the energy gap b/w the highest and lowest orbit energy states.
Higher the energy, lower the min wavelength. (attached concept)
As the incoming X-rays are accelerated by higher potential, they gain higher energy and are able to knock out electrons to higher orbits.
These electrons when return to ground state, emit wavelenghts, depending on the energy gap b/w the highest and lowest orbit energy states.
These electrons when return to ground state, emit wavelenghts, depending on the energy gap b/w the highest and lowest orbit energy states.
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