An electron practically at rest, is initially accelerated through a po – InterviewSolution

1.	An electron practically at rest, is initially accelerated through a potential difference of 100 volts. It then has a de Broglie wavlength =lambda_(1)Å. It then get retorted through 19 volts and then has a wavelength lambda_(2)Å . A further retardation through 32 volts changes the wavelength to lambda_(3). What is the value of (lambda_(3)-lambda_(2))/(lambda_(1))?
Answer» `(20)/(41)` `(10)/(63)` `(20)/(63)` `(10)/(41)` ANSWER :C

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