Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Two properties of ultraviolet radiation different from the visible light:
1. Ultraviolet radiation can pass through quartz, but they are absorbed by glass.
2. They are usually scattered by the dust particles present in the atmosphere.
APPEARS IN
संबंधित प्रश्न
Give a reason for the following:
Long-distance radio broadcasts use short-wave bands. Why?
Name the subjective property of light related to its wavelength.
What is the range of the wavelength of the following electromagnetic waves?
(a) Infrared.
What do you understand by the invisible spectrum?
What are ultraviolet radiations?
An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm.name the medium through which it is travelling
Solve the numerical problem.
Calculate the frequency in MHz of a radio wave of wavelength 250 m. Remember that the speed of all EM waves in a vacuum is 3.0 × 108 m/s.
Solve the numerical problem.
The speed of light is 3 × 108 m/s. Calculate the frequency of red light of a wavelength of 6.5 × 10−7 m.
If the Earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain.
Write two uses of the following radiation.
Gamma rays
