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the voltage across the electrodes of a cathode ray is 500 volt . calculate energy gained by an electron and also calculate the momentum. (ans : 8 x 10to the power -17 j ; 2 x 10to the power 5 m / sec.) i know the answer but not the way to solve it . please help me by solving this.


the voltage across the electrodes of a cathode ray is 500 volt . calculate energy gained by an electron and also calculate the momentum. (ans : 8 x 10to the power -17   j      ; 2 x 10to the power 5 m / sec.)
i know the answer but not the way to solve it . please help me by solving this.


Grade:10

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