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A well collimated parallel pencil of cathode rays falls through a potential difference 3kV & enters the spacing between two parallel metallic plates, parallel to their length the spacing between the plates being 0.5cm. The pencil strikes a fluorescent screen, mounted perpendicular to the length of the plates at the farther end of the plates & produces fluorescent spot. if now a potential difference of 3V is applied across the two plates, calculate the linear deflection of the spot on the screen. Given the length of the plates is 10 cm. |
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