Exploring Mirrors and Lenses

What are the key properties of a concave mirror?

• Concave mirrors always produce smaller images than the object.

• Concave mirrors do not have a focal point.

• Concave mirrors can only form virtual images.

• Key properties of a concave mirror include the ability to form real and virtual images, the presence of a focal point, and the capability to magnify objects.

How is a convex lens used in everyday applications?

• Convex lenses are used in televisions and radios.

• Convex lenses are used in car engines and batteries.

• Convex lenses are used in cooking and baking.

• Convex lenses are used in eyeglasses, cameras, projectors, and microscopes.

Calculate the magnification of a concave mirror with a focal length of 10 cm and an object distance of 15 cm.

• 0.8

• 1.5

• 2.0

• 0.4

Using the lens formula, find the image distance for a convex lens with a focal length of 20 cm and an object distance of 30 cm.

• 60 cm

• 80 cm

• 10 cm

• 40 cm

A concave mirror produces a magnification of -2. If the object distance is 10 cm, what is the image distance?

• 15 cm

• 20 cm

• 5 cm

• 25 cm