Question

A helium nucleus makes a full rotation in a circle of radius
0.8 meter in 2 sec. The value of the magnetic field induction
B in tesla at the centre of circle will be
(a) 2 × 10⁻¹⁹ μ₀ (b) 10⁻¹⁹ / μ₀
(c)10⁻¹⁹ μ₀ (d) 2 × 10⁻²⁰ /μ₀

Answer 1

Answer:

C is the correct answer I'm sure

Answer 2

Your answer is option C

Hope it helps