Mirrors and Lenses Lessons

Concave lens is called:

• diverging

• converging

• collecting

• converging and collecting

The straight line that joins between the two centers of curvature of the lens and passes

through its its optical center is called

• the focal length.

• the principal axis.

• the secondary axis.

• the radius of curvature.

A concave mirror of focal length 10 cm, to form an equal image to a body, the body should be placed at ----------from the mirror

• 20

• 30

• 15

• 10

Tags

NGSS.MS-PS4-2

a light ray falls parallel to the principal axis of a concave mirror will reflects ___________

• passing by the spherical center of the mirror.

• passing by the focus.

• on itself.

• passing by the optical centre,

Tags

NGSS.MS-PS4-2

When the object is very far from a concave mirror.

image is formed_________

• magnified

• real

• very tiny

• real and very tiny

The figure below shows light rays been diverged as they pass through a diverging lens.<\/p>

Which of the following correctly describes the image formed by the lens?<\/p>

• Real and larger than the object<\/p>

• Real and smaller than the object<\/p>

• Virtual and larger than the object<\/p>

• Virtual and smaller than the object<\/p>

Tags

NGSS.MS-PS4-2

If the mirror becomes flatter and the focal point moves farther from the mirror, which best describes the reflection of the parallel rays shown in the figure?

• They pass through the old focal point

• They do not pass through either the old or the new focal point

• They pass through the new focal point

• They reverse direction

Tags

NGSS.MS-PS4-2

The size of an object and its image are the same in this type of mirror...

• plane

• concave

• convex

A candle is placed at a short distance from a plane mirror, as shown in the figure below

At which labeled position will the image of the flame appear to be located?

• A

• B

• C

• M

Tags

NGSS.MS-PS4-2

Which of the following describes the image formation by a plane mirror?

• A real image is formed in front of the mirror

• A real image is formed behind the mirror

• A virtual image is formed in front of the mirror

• A virtual image is formed behind the mirror

Tags

NGSS.MS-PS4-2