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The ratio of the respective de Broglie w...

The ratio of the respective de Broglie wavelengths associated with electrons accelerated from rest with the voltages 100 V, 200 V and 300 V is

A

`1:2:3`

B

`1:4:9`

C

`1:(1)/(sqrt(2)):(1)/(sqrt(3))`

D

`1:(1)/(2):(1)/(3)`

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