1.

If an electron accelerated through a potential difference of 500 volt attains a speed of 1.33xx10^(7)ms^(-1), then specific charge of the electron should be:

Answer»

`1.67xx10^(11)Ckg^(-1)`
`1.8xx10^(11)Ckg^(-1)`
`1.92xx10^(11)Ckg^(-1)`
`1.76xx10^(11)Ckg^(-1)`

Solution :`EV=(1)/(2) mv^(2)`
`:.(E)/(m)=(V^(2))/(2V)=((1*33xx10^(7))^(2))/(2xx500)`
`=1*76xx10^(11)C//kg`


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