(a) does not set below the horizon at the Arctic Circle.
(b) does not set below the horizon at the Antarctic Circle.
(c) shines vertically overhead at noon on the Equator.
(d) shines vertically overhead at the Tropic of Capricorn.
Answer: (a)
On 21st June, the Northern Hemisphere is tilted towards the Sun. The rays of the Sun fall directly on the Tropic of Cancer. As a result, these areas receive more heat. The areas near the poles receive less heat as the rays of the Sun are slanting.
Option (a) is correct: The North Pole is inclined towards the Sun and the places beyond the Arctic Circle experience continuous daylight for about six months, meaning the Sun does not set below the horizon at the Arctic Circle.
Additional Information: Since a large portion of the Northern Hemisphere is getting light from the Sun, it is summer in the regions north of the equator. The longest day and the shortest night at these places occur on 21st June. At this time in the Southern Hemisphere, all these conditions are reversed. It is the winter season there. The nights are longer than the days. This position of the Earth is called the Summer Solstice.
