Spectropolarimeter on a 2--4 m class telescope and proposed science cases

We propose a spectropolarimeter a covering wavelength range of 3200--7000 {} [3200{} chosen as lower limit to go to the atmospheric cut-off. It's ``needed" for some Serkowski curves and would make the instrument even more unique] for a 2-4~m class telescope. In this article, we discuss the science cases which will be covered with this proposed instrument. The technical requirements and analysis plan for each science case is also discussed. This spectropolarimeter targeting exciting galactic and extra-galactic research, will be unique instrument on a 2-4~m facilities.