Electromagnetic Spectrum
55 questions· page 1 of 6
Which components of the electromagnetic spectrum are used to communicate from a remote controller to a television set and from the Earth to a satellite?
Options
| remote controller to TV set | the Earth to a satellite | |
|---|---|---|
| A | infrared | microwave |
| B | infrared | ultraviolet |
| C | light | microwave |
| D | light | ultraviolet |
Which statement about infrared radiation is correct?
Options
A In a vacuum, infrared radiation travels at the speed of light.
B Infrared radiation is a longitudinal wave.
C Infrared radiation has a higher frequency than ultraviolet radiation.
D White surfaces are better emitters of infrared radiation than black surfaces.
The colour of visible light is related to the wavelength of the light.
Which list of colours is in order of increasing wavelength?
Options
A blue green yellow red
B blue green red yellow
C green red yellow blue
D red yellow green blue
A student makes four statements about infrared waves.
- They can be seen by the human eye.
- They travel at in air.
- They are transverse waves.
- They are used by intruder alarms.
Which statements are correct for infrared waves?
Options
A 1 and 3
B 2, 3 and 4
C 2 only
D 3 and 4 only
Which two waves are components of the electromagnetic spectrum?
Options
A light and sound
B ultrasound and ultraviolet
C water waves and infrared
D X-rays and microwaves
Which row names a region of the electromagnetic spectrum with a wavelength longer than that of visible light and a region with a frequency that is greater than that of visible light?
Options
| wavelength longer than visible light | frequency greater than visible light | |
|---|---|---|
| A | infrared | ultraviolet |
| B | microwave | radio |
| C | radio | microwave |
| D | ultraviolet | infrared |
In which region of the electromagnetic spectrum does the Sun radiate the most energy?
Options
A infrared region
B microwave region
C radio wave region
D X-ray region
Ultraviolet radiation is a component of the electromagnetic spectrum.
Which application uses ultraviolet radiation?
Options
A Bluetooth technology
B prenatal scanning
C sterilising water
D thermal imaging
A ray of white light enters a prism as shown.
Which row is correct?
Options
| wave properties observed | frequency of red light compared with frequency of blue light | |
|---|---|---|
| A | dispersion only | smaller |
| B | refraction only | greater |
| C | dispersion and refraction | smaller |
| D | dispersion and refraction | greater |
Which waves are not part of the electromagnetic spectrum?
Options
A radio waves
B television signals
C ultrasound
D ultraviolet