A) \[7.5m\]
B) \[7.5\times {{10}^{-2}}m\]
C) \[7.5\times {{10}^{-4}}m\]
D) \[7.5\times {{10}^{-3}}m\]
Correct Answer: C
Solution :
[c] The velocity acquired by the electron is given as follows : |
when the particle enters the magnetic field its speed remains unchanged |
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