Which one of the following latitudes will experience a minimum angle of the Sun's rays when it is Summer Solstice in the Northern Hemisphere ?

During the Summer Solstice in the Northern Hemisphere (around June 21st), the Sun's rays fall directly on the Tropic of Cancer (23.5° N) [2]. At this time, the Northern Hemisphere is tilted toward the Sun, while the Southern Hemisphere is tilted away [1]. The angle of the Sun's rays decreases as one moves away from the latitude where the Sun is overhead. Consequently, latitudes in the Southern Hemisphere experience lower solar angles and less intense heating [1]. Among the given options, the Tropic of Capricorn (23.5° S) is the furthest south and thus experiences the most oblique or minimum angle of the Sun's rays. While the Arctic Circle (66.5° N) is further from the equator, it is tilted toward the Sun during this period, receiving continuous daylight [3]. Therefore, the minimum solar elevation occurs at the southernmost latitude listed.

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 19: The Motions of The Earth and Their Effects > Summer Solstice > p. 252
2. [2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 18: Latitudes and Longitudes > Latitudinal Heat Zones of The Earth > p. 242
3. [3] https://www.weather.gov/abq/clifeatures_summersolstice