Now I am persuing BCA 1st year .. can i do a archeology course after BCA ??
Yes, you can definitely pursue an archaeology course after completing your BCA (Bachelor of Computer Applications) even though they are in different fields.
Most universities offering archaeology programs require a bachelor's degree as a minimum qualification. Your BCA degree fulfills that requirement. While a background in history or social sciences might be preferred, your BCA wouldn't necessarily disqualify you.
I hope it helps!