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Light as a Wave & Particle Quiz

Total questions: 19

Worksheet time: 19mins

Name
Class
Date
1.

Which of the following is TRUE about ray?

a)

It is the direction of path taken by light

b)

It is a stream of light energy

c)

It could be parallel, divergent or converging

d)

It is a group of rays

2.

What kind of beam is shown on the picture?

a)

Ray

b)

Parallel

c)

Divergent

d)

Convergent

3.

The following are natural sources of light EXCEPT

a)

firefly

b)

sun

c)

lightning

d)

lightbulb

4.

Which of the following is an ILLUMINATED body

a)

sun

b)

moon

c)

light bulb

d)

lamp

5.

Which of the following is an application of light reflection?

a)

telescope

b)

eyeglasses

c)

mirrors

d)

microscope

6.

What is the angle of reflection of this image?

(a)  

7.

If light refract through ethanol. What is the value of it's n?

a)

1.36

b)

1.00

c)

1.47

d)

1.33

8.

In the equation, n = sin isin r\frac{\sin\ i}{\sin\ r}

what does r mean?

a)

angle of refraction

b)

reflective index

c)

angle of incident

d)

sine of the angle of reflection

9.

When a mirage is formed, what are the two mediums that light passes through which results in light being refracted?

a)

Hot air and cold air

b)

Air and raindrops

c)

Air and water

d)

Air and prism

10.

How will you describe the frequency, wavelength, and energy of gamma rays?

a)

Low frequency, long wavelength, and low energy

b)

high frequency, long wavelength, and low energy

c)

high frequency, short wavelength, and high energy

d)

low frequency, short wavelength, and high energy

11.

What color has the lowest frequency?

Clue: R-O-Y-G-B-I-V

a)

Yellow

b)

Green

c)

Blue

d)

Violet

12.

Which of the following statement is TRUE about light?

a)

It acts as a wave and a particle all the time

b)

It can sometimes act as a wave

c)

Sometimes it is a wave, other time it is a particle.

d)

It is only a wave.

13.

The theory that states that light behaves both like a wave and a particle.

(a)  

14.

Which of the following is NOT TRUE about photon?

a)

It is also called photoelectron

b)

Its number determines the intensity of light

c)

It has resting energy

d)

It is always in motion

15.

What color(s) are absorbed when you look at the image?

a)

None

b)

All visible colors

c)

White

d)

Black

16.

Rods and cones, which converts light energy into nerve impulses, be can be found in which part of the eye?

a)

Iris

b)

Retina

c)

Pupil

d)

Cornea

17.

Light-sensitive cells which are responsible for night-time vision and transmits black and white information to the brain?

a)

Rods

b)

Cones

c)

Iris

d)

Optic nerve

18.

List 1 way to prevent skin cancer. (1 point)

4 lines
19.

Why is red light used in a dark room? (2 points)

4 lines