Free Printable reflection and refraction

Worksheets

reflection and refraction

Total questions: 20

Worksheet time: 12mins

Name

Class

Date

Why does the straw appear to be bent?

light is reflected

light is absorbed

light is turned

light is refracted

When light passes from air to water, what happens to the speed of the light?

speeds up

slows down

stays the same

The velocity of light in vacuum is _______ m/s

3x10⁸

3x10¹²

3x10⁶

3x10¹⁰

What is the angle of reflection (θ_r) in the image?

56^o

90^o

124^o

34^o

A student placed a pencil in a cup of water. The pencil appears broken because light-

always travels in a straight line

bends when it passes through water

makes the water in the glass evaporate

reflects the pencil on the water's surface

Light has the lowest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45

diamond

water

flint glass

barium glass

What do we call this tool that separates white light into the colors of the Visible Spectrum?

tuning fork

prism

microscope

graduated cylinder

According to the Law of reflection, a light ray striking a mirror

continues moving through the mirror in the same direction

moves into the mirror at a slightly different angle

bounces off the mirror toward the direction it came from

bounces off the mirror at the same angle it hits.

What color has the longest wavelength?

Black

Green

Purple

Red

10.

The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface is called:

mirror

laser

reflection

refraction

11.

Which one of these describes a lens that causes light to come to together at a single point?

concave

opaque

convex

translucent

12.

A mirror having focal length –15 cm is _________________

Plane mirror

Concave mirror

Convex mirror

None of these

13.

The following diagram shows the ray diagram when a torch light is torched towards a mirror. Which of the following is the correct reflected ray?

14.

Law of reflection state that - The angle of incidence is .................. to the angle of reflection.

equal

double

half

15.

If the angle of incidence increases, the angle of refraction ________.

Increases

Decreases

16.

No matter how far you stand from a spherical mirror, your image appears erect. The mirror may be

only plane

only concave

either plane or convex

only convex

17.

A positive sign in the value of magnification indicates that the image is

real

virtual

enlarged

near

18.

A ray of light coming parallel to the principal axis after passing through a convex lens, has passed through its

optical centre

focus

center of curvature

mid point

19.

When light passes through a convex lens, it does this.....

Diverge, or spread apart

Converge, or come together

Reflect, or bounce off

Create a rainbow

20.

The thicker the convex lens, the ___________________ its focal length.

Shorter

Longer

Thicker

Thinner

Reset

reflection and refraction

Total questions: 20

Worksheet time: 12mins

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