I am an undergrad physics major and I have been involved in something that I (and my supervisor) want to get published (I am the first author and my supervisor is the only other coauthor). This is a theoretical work - so no data/lab work. This is also outside my curriculum and contributes in no way to my being awarded my degree - its purely something I have pursued of my own accord.
While our work/results are far from path breaking, it is original and kind of interesting (but nothing riveting); however, this work is based on a topic that has been around for a long time. When it comes to the content I would describe it as too much for a typical undergrad journal, even something like Am J Phys (so my supervisor said), but not enough for a proper high quality journal, like say the Phys Revs (in my opinion).
Despite this, we made an initial submission to such a top journal - we got desk rejected within a week (reason being the our work was not suited to the said journal, probably in terms of quality; editor advised us to look for a more specialised place). Now, my supervisor wants to try another similar journal - I am nearly certain we are going to be desk rejected this time as well. I recognise that my supervisor has a huge amount of experience and wouldn't have suggested publishing if he didn't feel it was worth it. Therefore, despite reservations, I am okay with submitting wherever he wants me to.
Now, we already published a pre-print on the arXiv and my question is as follows: In case our manuscript remains unpublished by the time I graduate (another 2 years), would my arXiv preprint have any positive impact on my CV?