I'm a third year undergraduate engineering student in India.
I am applying for a research program at a foreign university which will start at the end of my third year. This internship program requires at least one and a maximum of two letters of recommendation. As is the case for many students in my college (and I suspect many Indian engineering undergrads as well), I do not have much interaction with most of my professors outside of classes. My grades are decent but nothing spectacular in my courses.
Hence, I only have one strong letter of recommendation from a professor with whom I am doing a project. The rest of my professors who I have spoken to about the same have only given me tepid responses and have advised me to come back only if I cannot find anyone else ready to give me a letter.
In this case, what should I do for filing my LoRs? Would it be better to submit only the strong LoR or should I submit a weaker LoR as well?