CUET Preparation Today
An electron moves with a velocity of $1200 m\, s^{-1}$ in a magnetic field of 0.4 T at an angle of 30°. What will be the approximate radius of its path? (Take e/m of electron = $1.76 × 10^{11} C\, kg^{-1}$) |
$9 × 10^{-8} m$ $8.6 × 10^{-9} m$ 4.4 x 10-10 m 1.5 x 10-11 m |
$8.6 × 10^{-9} m$ |
The correct answer is Option (2) → $8.6 × 10^{-9} m$ |
