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Question

A positive charge $q$ is projected in magnetic field of width $\frac{m v}{\sqrt{2} q B}$ with velocity $v$ as shown in figure. Then time taken by charged particle to emerge from the magnetic field is

A

\frac{m}{\sqrt{2} q B}

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B

\frac{π m}{4 q B}

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C

\frac{π m}{2 q B}

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D

\frac{π m}{\sqrt{2} q B}

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Solution

The correct option is B $\frac{π m}{4 q B}$

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Q. A positive charge q is projected in magnetic field of width

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