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Mechanical Waves: Application 9
Test Description: Review Physics Game for Grade 9/ Mechanical Waves: Application Propagation of Light
Instructions: Answer all questions to get your test result.
1) Laser light consists of one color , then laser light is :
A
black light
B
monochromatic light
C
dichromatic light
D
polychromatic light
2) What type of waves is used to transmit cellular telephone messages?
A
Radio waves
B
Visible light
C
Microwaves
D
Gamma rays
3) Which electromagnetic waves have the shortest wavelengths and highest frequencies?
A
Ultraviolet rays
B
Radio waves
C
X-rays
D
Gamma rays
4) Electromagnetic waves that you can see are called:
A
Infrared rays
B
Microwaves
C
Visible light
D
X-rays
5) Electromagnetic waves that you can see are called:
A
Microwaves
B
X-rays
C
Infrared rays
D
Visible light
6) How much of the electromagnetic spectrum is visible?
A
None of it
B
Only a small part
C
Most of it
D
All of it
7) What is visible light composed of?
A
Light Radar
B
Radio waves
C
Red, orange, yellow, green, blue and violet
D
Gamma rays
8) Sun light :
A
polychromatic light
B
all the choices
C
monochromatic light
D
none of the choices
9) Wood doesn’t allow light to pass through it, then wood is :
A
translucent body
B
black body
C
transparent body
D
opaque body
10) The speed of light in water is :
A
zero compared to the speed of air
B
equal to its speed in air
C
less than its speed in air
D
greater than its speed in air
11) Electromagnetic wave propagates in :
A
transparent medium only
B
vacuum only
C
water only
D
in vacuum and transparent medium
12) Electromagnetic spectrum consists of :
A
visible waves
B
visible and invisible waves
C
invisible waves
D
none
*select an answer for all questions
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