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An electron enters a uniform magnetic field with speed \(v\). It describes a semicircular path and comes out of the fiel…

Q1

An electron enters a uniform magnetic field with speed \(v\). It describes a semicircular path and comes out of the field. The final speed of the electron is :

a

Zero

b

\(\mathrm{v}\)

c

\(\frac{\mathrm{v}}{2}\)

d

\(2 \mathrm{v}\)

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