‘Love and tolerance are the true indicators of a civilized person.’ Justify.
A civilized person should exhibit both love and tolerance. While love is essential in personal life, tolerance is necessary for managing social and public affairs. A person who tolerates others' differences and remains patient in difficult situations contributes to peace and harmony in society.
Explain the construction of a spherical wavefront by using Huygens' principle.
The slope of the tangent to the curve \( x = \sin\theta \) and \( y = \cos 2\theta \) at \( \theta = \frac{\pi}{6} \) is ___________.