I can't study for many hours..........i have concentration problem. How can i concentrate more on my studies?.

you can concentrate during ur studie lke ids: 1.do a meditation for 15min before studies. 2.write and learn. 3.take a small break. 4.use many study techinices lke singing etc.

I used to have the same trouble at college. My solution was to repeat the process of learning any new topic until it had stuck - little and often rather than continuous study. Unfortunately that means you have to spend more hours studying than most of your peers but it works. People with dyslexia do similar to correct their mistakes in drafting - never allow your first draft to through without a final review or two, preferably the next day.

I listen to a little music. You could try that, but i don't know how well it would work.

You should change your method of studying. Instead of studying for longer hours, try studying in shorter intervals, and making breaks after each interval. For example, study for 40 min then make 20 min break, then study again for 40 min and make another 20 min break. During the breaks try to do something mindless, that will relax you.