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Question

The wavelength associated with an electron accelerated through a potential difference of 100 V is nearly


  1. 100˙A

  2. 123˙A

  3. 1.23˙A

  4. 0.123˙A


Solution

The correct option is C

1.23˙A


λ=h2mQV=6.6×10342×9.1×1031×1.6×1019×100=1.23˙A

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