a conceptual confusion -- loop device

[nidhi mittal hada <nidhimittal19@xxxxxxxxx>]

hi all 
I created a loop device 
/dev/loop0 ------------>with the image file ---------->file.img 
then 
mkfs and
mount /dev/loop0 to /mnt

cd /mnt 
created files a.c , b.c
rm file.img  ------- removed file.img

cd /mnt
still i am able to see a.c b.c here 
How are these files present here ?
they should have been deleted as underlying storage file is no where present !! 



-- 
Thanks & Regards 

Nidhi Mittal Hada
Scientific officer D 
Computer Division 
Bhabha Atomic Research Center 
Mumbai