The pronunciation of ㄴ + ㄹ combination

Question

For example, if you pronounce the word 문리, the ㄴ turned into ㄹ because it is put right before ㄹ. However, the rule of the pronunciation of ㄹ is:

(according to a Reddit page)

ㄹ has two different pronunciations, depending on it's position.

1. between vowels , R - However, unlike English 'r' which is pronounced with the tip of the tongue curled backwards, Korean is pronounced with the tip of the tongue flicking quickly against the dental ridge.

Example: 노래, ㄹ is between ㅗ and ㅐ which are vowels, and your word, 사랑

2. in other positions , L - In Korean it is pronounced with the tongue touching against the dental ridge just behind the teeth as in the English word lap

Example: 몰라 ,first ㄹ is between ㅗ and ㄹ which are a vowel and a consonant, secondㄹ is between ㄹ and ㅏ which are a consonant and a vowel

But the word then has two Ls. So the pronunciation is like "molli". But then what is the difference between the singe L and double L?

Answer 1

Korean is a syllable-timed language, whereas English is a stress-timed one. For every syllable of a word to be pronounced clearly, the double L may have to be a prolonged L sound (lː). Other than that, there is no difference in pronunciation between the single L and double L. Just as the double Ls of actually, belly, and chilly become the single Ls in pronunciation, mulli can be read as muli, but you should pronounce each syllable distinctly.

문리 is pronounced as 물리. In other words, 물리 and 문리 are the same in pronunciation. You may look up 물리 to hear the sound. Forvo has the recorded sounds of 물리, too.