UIButton custom retina image stretched in iPad Retina Display

Question

I have one issue with iPad retina image. When i was executing my add in normal ipad it looks great.

But when I am executing this app in iPad Retina then UIButton custom images is stretched upwards.

Also I added images for "@2x" icon images for retina mode.

Using this code:

UIButton *btnEye=[[UIButton alloc] initWithFrame:CGRectMake(10, 5.5, 35, 35)];
[btnEye setImage:eyeImage forState:UIControlStateNormal];
[reportToolbar addSubview:btnEye];

In Normal Mode :

In Reitna Mode:

Answer 1

Are the retina images really having double resolution than normal or it has the same resolution as the normal one?