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WorksheetsQuarter2 Review Part 2 - EM WAVES
Total questions: 10
Worksheet time: 7mins
Which of the following statements is/are TRUE?
I. All EM waves have the same speed
II. All EM waves travel at the speed of light.
III. As wavelength of EM wave decreases, the frequency of the wave increases.
IV. As frequency of the wave increases, energy of the wave also increases.
I only
I and II
I, II and III
I, II, III and IV
A certain radio station broadcasts at a frequency of 675 kHz. What is the wavelength of the radio waves?
280 m
324 m
400 m
444 m
Which two waves lie at the ends of the visible spectrum?
Infrared and Ultraviolet rays
Infrared and Ultraviolet rays
Radio waves and Microwaves
X-rays and Gamma rays
In the visible spectrum, which color has the longest wavelength?
Blue
Green
Red
Violet
Which property spells the difference between infra-red and ultra-violet radiation?
Color
Speed in vacuum
Wavelength
none of these
What type of electromagnetic waves is used in radar?
Infrared rays
Microwaves
Radio waves
Ultraviolet rays
Which electromagnetic wave carries more energy than the others?
microwaves
radio waves
UV radiation
visible light
How does the audio signal of television networks transmitted?
By modulating the frequency of the wave
By modulating the amplitude of the wave
By transforming it to an analog signal
By transforming it to a digital signal
What is the type of electromagnetic wave used in texting messages?
radio waves
microwaves
ultraviolet rays
X-rays
What is the type of electromagnetic wave used in checking banknotes signature?
radio waves
microwaves
ultraviolet rays
X-rays
