Physics Review

A candle is placed on the principal axis of a converging lens at a distance of 30 cm from the lens. The focal length of the lens is 10 cm. The image formed will be

• Real, inverted, and reduced
• Real, inverted, and enlarged
• Real, upright, and enlarged
• Virtual, upright, and enlarged

A converging lens has a focal length of 30 cm. A 5 cm tall candle is placed at a distance of 10 cm in front of the lens. Determine the image distance.

• - 45 cm
• -30 cm
• -15 cm
• 6 cm

An object is located 0.15 m from a converging lens with focal length 0.10 m.
How far from the lens is the image formed?

• 100/3 m
• 3/10 m
• 10/3
• 3/100 m

An object is located 15 m from a converging lens with focal length 10 m.If the object is 2 cm tall, find the image height if the image is located at 30 m.

• 4 m
• -4m
• 1m
• -1m

An object of height 4 cm is placed 10 cm away from a diverging lens of focal length 6 cm as shown below.Image is 

• virtual.inverted
• virtual,upright
• real,inverted
• real,upright

Convex Mirrors produce...

• only virtual images
• virtual or real images
• only real images
• inverted images

An erect image which is smaller than the object forms...

• behind a concave mirror
• in front of a convex lens
• behind a convex mirror
• in front of a concave mirror

a real image...

• is produced by virtual rays and can be projected on a screen
• is produced by real rays and cannot be projected on a screen
• is produced by virtual images and cannot be projected on a screen
• is produced by real rays and can be projected on a screen

Why does light bend when it moves from one material to another?

• because it travels slow
• because it travels fast
• because it changes speed and bends
• light does not bend

The bending of light as it moves from one material to another is ---

• refraction
• reflection
• translucent
• absorbed