MCQ
In producing X-rays a beam of electrons accelerated by a potential difference V is made to strike a metal target. For what value of V, X-rays will have the lowest wavelength of 0.3094 Å
- A10 kV
- B20 kV
- C30 kV
- ✓40 kV
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(Here e is the electronic charge)
Reason $(R)$ : Magnetic moment of the revolving electron, $\mu \propto n$.