Understanding Concave Lenses (lens equation) in Optics

Front

What is a concave lens?

Back

A concave lens is a diverging lens that is thinner at the center than at the edges, causing parallel rays of light to diverge after passing through it.

Front

What is the focal length of a concave lens?

Back

The focal length of a concave lens is negative, indicating that the focal point is virtual and located on the same side as the object.

Front

How does a concave lens affect the size of an image?

Back

A concave lens always produces an image that is smaller than the object.

Front

What type of image is formed by a concave lens?

Back

A concave lens always forms a virtual and upright image.

Front

What happens to parallel rays of light when they pass through a concave lens?

Back

Parallel rays of light diverge away from a focal point after passing through a concave lens.

Front

Back

Front

Back

Front

What is the sign convention for the focal length of a concave lens?

Back

The focal length of a concave lens is always negative.

Front

What is the relationship between object distance and image distance in a concave lens?

Back

Front

What is the nature of light rays after passing through a concave lens?

Back

Light rays passing through a concave lens diverge, making them appear to originate from a virtual focal point.