What are the key differences between real and virtual images?
Real Image: Formed by converging light rays, can be projected on a screen. Virtual Image: Formed by diverging light rays, cannot be projected on a screen.
Compare and contrast convex and concave lenses.
Convex Lenses: Converge light, can form real or virtual images. Concave Lenses: Diverge light, only form virtual images.
What is the effect of a convex lens on parallel light rays?
The rays converge at the focal point.
What is the effect of a concave lens on parallel light rays?
The rays diverge, appearing to originate from a focal point on the same side of the lens.
What happens when |M| > 1?
The image is larger than the object (enlarged).
What happens when |M| < 1?
The image is smaller than the object (reduced).
What does a negative magnification (M) indicate?
The image is inverted.
What does a positive magnification (M) indicate?
The image is upright.
What is the effect of placing an object at the focal point of a convex lens?
No image is formed; the refracted rays are parallel.
What is the effect of a negative magnification?
The image is inverted.
What is the effect of a magnification with an absolute value greater than 1?
The image is enlarged.
What is the effect of a magnification with an absolute value less than 1?
The image is reduced.
