Review Time Part 4

A mirror supplier recommends convex mirrors over concave mirrors for vehicle side view mirrors. What is the rationale behind the supplier’s recommendation?

• The image formed would be virtual and erect.

• The objects would appear closer and larger.

• The objects would appear closer and smaller.

• The objects would appear smaller and farther.

An object is placed 30 cm from the convex mirror with a focal length of 20 cm. Determine the image distance.

• 20 cm

• 30 cm

• 50 cm

• 60 cm

A 4.00-cm tall light bulb is placed 45.7 cm from a double convex lens having a focal length of 15.2 cm. What is the distance of the image?

• 0.22 cm

• 2.20 cm

• 22.0 cm

• 220 cm

The ray diagram shows two rays from a point on an object placed in front of a diverging (concave) lens. What are the properties of the image produced?

• Real and Larger than the Object

• Real and Smaller than the Object

• Virtual and Larger than the Object

• Virtual and Smaller than the Object

Convex lenses are used in cameras and as magnifying glasses. Which types of images are formed?

• Camera: Real and Magnifying Glass: Real

• Camera: Real and Magnifying Glass: Virtual

• Camera: Virtual and Magnifying Glass: Real

• Camera: Virtual and Magnifying Glass: Virtual

What kind of image is formed by concave lenses?

• Always real, inverted, and bigger than the object.

• Always virtual, upright, and smaller than the object.

• Could be real or virtual, but always real when the object is placed at the focal point.

• Could be real or virtual, depending on the distance of the object from the focal point.

What is the difference between a real and virtual image?

• A real image exists while a virtual image doesn’t really exist.

• A real image can be seen while a virtual image cannot be seen.

• A real image is the right way up while a virtual image is upside down.

• A real image can be projected onto a screen or piece of paper while a virtual image cannot.

The ray diagram shows two rays from a point on an object placed in front of a diverging (concave) lens. What are the properties of the image produced?

• Real and Larger than the Object

• Real and Smaller than the Object

• Virtual and Larger than the Object

• Virtual and Smaller than the Object

What kind of image is formed by concave lenses?

• Always real, inverted, and bigger than the object.

• Always virtual, upright, and smaller than the object.

• Could be real or virtual, but always real when the object is placed at the focal point.

• Could be real or virtual, depending on the distance of the object from the focal point.

What do you call a curved mirror in which the reflective surface bulges away from the light source?

• Concave Mirror

• Convex Mirror

• Converging Mirror

• Plane Mirror