Ten Degree Channel is found between :

The Ten Degree Channel is a significant water body in the Bay of Bengal that separates the Andaman Islands to the north from the Nicobar Islands to the south [3]. Specifically, it lies between Little Andaman, the southernmost island of the Andaman group, and Car Nicobar, the northernmost island of the Nicobar group [4]. The channel is approximately 150 kilometers (93 miles) wide and is named after its location on the 10-degree line of latitude north of the equator [3]. While the Andaman group includes islands like North, Middle, and South Andaman, and the Nicobar group includes Great Nicobar, the specific boundary defined by this channel is between Little Andaman and Car Nicobar. Other nearby passages include the Duncan Passage, which separates South Andaman from Little Andaman.

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 2: Physiography > Islands of the Bay of Bengal > p. 66
2. [3] https://www.britannica.com/place/Andaman-and-Nicobar-Islands
3. [4] http://db.and.nic.in/nicobars/Profile/GeoFeat.php