Mirrors and lenses

What type of mirror produces an image that is virtual, upright, and smaller than the object?

Convex mirror

What type of mirror produces an image that is virtual, upright, and larger than the object?

Concave mirror - object is placed between the focal point and the mirror.

What type of mirror produces an image that is real, inverted, and smaller than the object?

Concave mirror - object is placed further than the center of the mirror

What type of mirror produces an image that is real, inverted, and larger than the object?

Concave mirror - object is between the center of the mirror and the focal point

What sign does the focal point for a CONCAVE mirror have?

Positive - focal point is in real space

What sign does the focal point for a CONVEX mirror have?

Negative - focal point is in virtual space

What type of lens is needed to produce an image that is real, smaller than the object, and inverted?

A converging lens with the object further than twice the focal distance.

What type of lens is needed to produce an image that is real, taller than the object, and inverted?

A converging lens with the object further than the focal distance.

What type of lens is needed to produce an image that is virtual, taller than the object, and upright?

A converging lens with the object placed between the focal point and the lens.

What type of lens is needed to produce an image that is virtual, smaller than the object, and upright?

A diverging lens

If the magnification m > 1, what can we say about the image?

It is larger than the object.

If the magnification m is NEGATIVE, what can we say about the image?

It is inverted.

If the magnification m < 1, what can we say about the image?

It is smaller than the object.

What sign does the focal point for a diverging thin lens have?

f is negative.

What sign does the focal point for a converging thin lens have?

f is positive.

Rays coming through the center of curvature ____ ______.

don’t refract.

What lens would be in the glasses or contacts prescribed to a farsighted person?

Converging lenses that form a virtual image at the eye’s near point, putting the image farther from their eye

What lens would be in the glasses or contacts prescribed to a nearsighted person?

Diverging lenses that form a virtual image at the eye’s far point, putting the image closer to your eye