1. The image of a nearby object formed by a camera lens is
(a) At the lens' focal point.
(b) Always blurred.
(c) At the same location as the image of an object at infinity.
(d) farther from the lens than the lens' focal point.
2. What is a megapixel in a digital camera?
(a) A large spot on the detector where the image is focused.
(b) A special kind of lens that gives a sharper image.
(c) A number related to how many photographs the camera can store.
(d) A million light-sensitive spots on the detector.
(e) A number related to how fast the camera can take pictures.
3. When a nearsighted person looks at a distant object through her glasses, the image produced by the glasses should be
(a) About 25 cm from her eye.
(b) At her eye's far point.
(c) At her eye's near point.
(d) At the far point for a normal eye.
4. If the distance from your eye's lens to the retina is shorter than for a normal eye, you will struggle to see objects that are
(a) Nearby.
(b) Far away.
(c) Colorful.
(d) Moving fast.
5. The image produced on the retina of the eye is _____compared to the object being viewed.
(a) Inverted.
(b) Upright.
(c) Sideways.
(d) Enlarged.