The torque τ on a current-carrying coil in a magnetic field B is:
\[ \tau = M \times B \]
List -I | List-II | ||
A | Diamagnetic solid | I | CrO2 |
B | Ferromagnetic solid | II | Fe3O4 |
C | Antiferomagnetic solid | III | NaCl |
D | Ferrimagnetic solid | IV | MnO |
The slope of the tangent to the curve \( x = \sin\theta \) and \( y = \cos 2\theta \) at \( \theta = \frac{\pi}{6} \) is ___________.
Solve the following L.P.P. by graphical method:
Maximize:
\[ z = 10x + 25y. \] Subject to: \[ 0 \leq x \leq 3, \quad 0 \leq y \leq 3, \quad x + y \leq 5. \]