Quiz on Mirrors, Lenses, and Acoustics

What type of image is formed by a concave mirror when the object is placed beyond the center of curvature?

• Virtual and upright

• Real and inverted

• Virtual and inverted

• Real and upright

Where should an object be placed in front of a convex mirror to produce a virtual image?

• Beyond the focal point

• At the focal point

• Anywhere in front of the mirror

• Beyond the center of curvature

Which of the following statements about concave mirrors is true?

• They only form virtual images.

• They can form real or virtual images depending on the object position.

• They always form upright images.

• They only magnify images.

In a concave mirror, if the object is located at the focal point, what type of image is formed?

• No image is formed

• Real and inverted

• Virtual and upright

• Real and upright

What type of image is produced by a convex mirror?

• Always real and inverted

• Always virtual and upright

• Sometimes real, sometimes virtual

• Real and upright

What kind of lens is used to correct myopia (nearsightedness)?

• Convex lens

• Concave lens

• Cylindrical lens

• Bifocal lens

A convex lens produces an image that is real and inverted when the object is placed...

• Beyond the focal point

• At the focal point

• Between the lens and the focal point

• Between the focal point and twice the focal length

What kind of lens has a positive focal length?

• Concave

• Convex

• Cylindrical

• Both A and C

If a convex lens has a focal length of 10 cm, where should an object be placed to produce a virtual image?

• At the focal point

• Beyond twice the focal length

• Between the focal point and the lens

• At twice the focal length

What is the principal focus of a concave lens?

• The point where parallel rays converge

• The point from which parallel rays appear to diverge