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				| 1. | An electron beam is moving between two parallel plates having electric field \[1.125\times {{10}^{-6}}N/m\]. A magnetic field \[3\times {{10}^{-10}}T\] is also applied so that beam of electrons do not deflect. The velocity of the electron is [MH CHT 2004] | 
| A. | \[4225\ m/s\] | 
| B. | \[3750\ m/s\] | 
| C. | If assertion is true but reason is false. | 
| D. | \[3200\ m/s\] | 
| Answer» C. If assertion is true but reason is false. | |