Q. The concentric circles in a solar chart represent
(A) Azimuth angle (B) Altitude angle
(C) Horizontal shadow angle (D) Vertical shadow angle
Ans: Altitude angle
Sol:
Straight lines passing from the centre represent various azimuth angles. Concentric circles represent circles of equal altitude above the horizon. The point at the intersection of the corresponding date and hour line represents the instantaneous location of the sun.