An electron , practically at rest , is initially accelerated through a potential difference of 100 volts . It then has a de Broglie wavelength = lambda_(1) "Å" . It then gets retarded through 19 volts and then has wavelength lambda_(2) "Å" . A further retardation through 32 volts changes the wavelength to lambda_(3) . What is (lambda_(3) - lambda_(2))/(lambda_(1)) ?

An electron , practically at rest , is initially accelerated through a

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