An electron moving with kinetic energy 6×10⁻¹⁶ joules
enters a field of magnetic induction 6 × 10⁻³ weber/m² at
right angle to its motion. The radius of its path is
(a) 3.42 cm (b) 4.23 cm
(c) 5.17 cm (d) 7.7 cm
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D is the correct answer I'm sure about it
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