All Flashcards
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 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 a convex lens?
A lens that converges parallel light rays to a focal point on the opposite side.
What is a concave lens?
A lens that diverges parallel light rays, making them appear to originate from a focal point on the same side.
What is a real image?
An image formed when light rays converge at a point, capable of being projected onto a screen.
What is a virtual image?
An image formed when light rays diverge, appearing to originate from a point, but cannot be projected.
Define focal length (f).
The distance from the lens to the focal point.
What is object distance ()?
The distance from the object to the lens.
What is image distance ()?
The distance from the lens to the image.