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- 1. Multiple Choice
Which two waves lie at the ends of the visible spectrum ?
Infrared and Ultra-violet rays
Radio waves and Microwaves
Radio waves and X-rays
X-rays and Gamma Rays
- 2. Multiple Choice
In the visible spectrum, which color has the longest wavelength ?
Blue
Green
Red
Violet
- 3. Multiple Choice
Which property spells the difference between infra-red and ultra-violet radiation ?
Color
Speed in Vacuum
Wavelength
None of the above
- 4. Multiple Choice
A certain radio station broadcasts at a frequency of 675 kHz. What is the wavelength of the radio waves ?
280 meters
324 meters
400 meters
444 meters
- 5. Multiple Choice
What type of electromagnetic waves is used in radar ?
Infrared waves
Microwaves
Radio waves
Ultra-violet waves
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