Which one of the following is incorrectly matched ?
List-I (Term) | List-II (Meaning) |
(A) Physiological density | Total population/Net cultivated area |
(B) Agricultural density | Total agricultural population/Net cultivable area |
(C) Population density | Total population/Total area |
(D) Marginal worker | Total population/Total working population |
Explain the construction of a spherical wavefront by using Huygens' principle.
The perpendicular distance of the plane \( r \cdot (3\hat{i} + 4\hat{j} + 12\hat{k}) = 78 \) from the origin is __________.
Derive an expression for maximum speed of a vehicle moving along a horizontal circular track.