- Flue-cured varieties:
- Kanchan, Jayasri, Anand-119
- Air-cured varieties:
- Abirami, Swarna, Bhavya - Chewing tobacco varieties:
- Dharani, Lal Ganga, Manasi
Transplanting:
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 ___________.