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A slab of uniform magnetic field deflects a moving charged particle by 45º as shown in the figure.kinetic energy of the charged particle at the entry and exit points in the magnetic field will change in the ratio of—
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- 1: √2
- √2: 1
- 1: 1
- 1: 2
Correct Option: C
The force on a charge moving in a magnetic field is F = q V × B; the force is ⊥ to both V and B. Hence the magnitude of V is not changed and thus kinetic energy at the entry and exit points will be same.
