For Question 8, the velocity of the charged particle, I get, v = Bqr/m = (0.1 x 1.6E-16 x 0.1)/6.692E-27) = 2.391 x 10^8 m/s , and this is option (C). Check my maths, please!
For Question 8, the velocity of the charged particle, I get, v = Bqr/m = (0.1 x 1.6E-16 x 0.01)/6.692E-27) = 2.391 x 10^7 m/s , and this isn't one of the options. Check my maths, please!