GRADE

You see the reflection of the clock without numbers in your plane mirror. The image formed by the hands of the clock shows the time of 3:30. What is the real time?

• 3:30

• 8:30

• 9:30

• 10:30

How much larger will your classroom seem to appear if the entire two adjacent walls of your classroom consist of plane mirrors?

• 2x larger

• 3x larger

• 4x larger

• can't be determined

Where is the image located if an object is 30 cm in front of convex mirror with a focal length of 20 cm?

• between F and V

• between C and F

• in front of the mirror

• can't be determined

What is the distance of your image from you if you stand 1.5 m in front of a plane mirror?

• 1.5 m

• 2.0 m

• 3.0 m

• 4.5 m

Zed stands 1.5-m tall in front of a plane mirror. What is the height of his image?

• 4.5 m

• 3.0 m

• 2.0 m

• 1.5 m

A light ray, travelling parallel to a concave mirror's axis, strikes the mirror's surface. The reflected ray _________.

• passes through the mirror's focal point

• again travels parallel to the mirror's axis

• travels at right angles to the mirror's axis

• passes through the mirror's center of curvature

An object is placed between a concave mirror and its focal point. What is the type and orientation of the image formed?

• virtual and inverted

• real and inverted

• virtual and erect

• real and erect

What kind of mirror is used in automobiles and trucks to give the driver a wider area and smaller image of traffic behind him?

• plane mirror

• convex mirror

• concave mirror

• none of the above

What type of mirror do dentists usually use to see clearly the images of our teeth?

• plane mirror

• convex mirror

• concave mirror

• none of the above

When a small object is placed on the principal axis of a concave mirror between the focus and the mirror, the image formed is _____________.

• erect, magnified, and virtual

• inverted, magnified, and real

• inverted, reduced, and real

• erect, reduced, and real