A beam of well collimated cathode rays travelling with a speed of `5xx10^(6)ms^(-1)` enter a region of mutually perpendicular electric and magnetic fields and emerge undeviated from this region. If `|B|=0.02t`, the magnitude of the electric field isA. `10^(5)Vm^(-1)`B. `2.5xx10^(8)Vm^(-1)`C. `1.25xx10^(10)Vm^(-1)`D. `2xx10^(3)Vm^(-1)`

A beam of well collimated cathode rays travelling with a speed of `5xx

1.	A beam of well collimated cathode rays travelling with a speed of `5xx10^(6)ms^(-1)` enter a region of mutually perpendicular electric and magnetic fields and emerge undeviated from this region. If `\|B\|=0.02t`, the magnitude of the electric field isA. `10^(5)Vm^(-1)`B. `2.5xx10^(8)Vm^(-1)`C. `1.25xx10^(10)Vm^(-1)`D. `2xx10^(3)Vm^(-1)`
Answer» Correct Answer - A

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