1. When viewing an object through an astronomical telescope, if the object is located above the principal axis and the image is located below the principal axis, then we can be certain that

a) the image will appear upright

b) the image will appear inverted

c) image is real

d) the eyepiece is missing

When your eyes are underwater, objects look blurry because

a) light rays are bent more at the external surface of the cornea in the absence of air and are focused in front of the retina

b) light rays aren't bent as much at the external surface of the cornea in the absence of air and are focused far behind the retina

c) light rays aren't bent as much at the external surface of the cornea in the absence of air and are focused in front of the retina

d) light rays are bent more at the external surface of the cornea in the absence of air and are focused far behind the retina