Correct Answer : Option (C) : Laplacian operation
Explanation : Div (Grad V) = (Del)2V, which is the Laplacian operation. A function is said to be harmonic in nature, when its Laplacian tends to zero.
Correct Answer : Power radiated per unit solid angle in that direction
Correct Answer : A quarter wave line
Correct Answer : Larger wavelength than in the free space