A circular disc of radius 0.2 metre is placed in a uniform magnetic field of induction $\frac{1}{\mathrm{\pi }}\left(\frac{\mathrm{Wb}}{{\mathrm{m}}^2}\right)$ in such a way that its axis makes an angle of 60° with B. The magnetic flux linked with the disc is :

• A

  0.08 Wb

• B

  0.01 Wb

• C

  0.02 Wb

• D

  0.06 Wb