A) \[1.2\times {{10}^{6}}\text{ }m/s\]
B) \[7.5\times {{10}^{12}}\text{ }m/s\]
C) \[7.5\times {{10}^{6}}\text{ }m/s\]
D) none of these
Correct Answer: C
Solution :
Here, magnetic field \[B=0.0004\text{ }Wb/{{m}^{2}}.\] Electric field \[E=3000\text{ }V/m.\] The velocity of an electron, when beam suffers no deflection is given by \[V=\frac{E}{B}\] \[=\frac{3000}{0.0004}=7.5\times {{10}^{6}}\,m/s\]You need to login to perform this action.
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