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| 1. |
Two identical balls of charges q, & q, initially haveequal velocity of the same magnitude and direc-tion. After a uniform electric field is applied for sometime, the direction of the velocity of the first ballchanges by 60° and the magnitude is reduced byhalf. The direction of the velocity of the secondball changes there by 90°. In what proportion willthe velocity of the second ball changes ? |
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