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Cathode Ray Experiment

Cathode rays ...

Question

Cathode rays are travelling from east to west into a region of electric field directed from north to south in the plane of the page. The deflection of cathode rays is towards

A

East

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B

West

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C

North

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D

South

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Solution

The correct option is C North
When an external electric field is applied, the cathode ray is deflected toward the positive pole.
Hence the deflection is towards north.
So, the answer is option (C).

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