| 1. Tropical Zone |
| 2. North and South Temperate Zones |
| 3. North and South Frigid Zones |
A) ?1 only?????? ??????????????????
B) ?1 and 2 only
C) ?1,2, and 3?????? ?
D) ?2 and 3 only
Correct Answer: D
Solution :
?The sun's rays can be vertical only within the tropics i.e. \[{{23}^{o}}30'N\] to \[{{23}^{o}}30'S\], beyond when the sun's rays are never vertical because the axis of the earth is inclined at an angle of\[{{23}^{o}}30'\]to its orbital plane.
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