Advertisements
Advertisements
प्रश्न
Name two sources of ultraviolet radiation.
उत्तर
(i) Sun, (ii) Electric arc.
APPEARS IN
संबंधित प्रश्न
What role dose infra-red radiation play in maintain the Earth’s warmth
The wavelengths for the light of red and blue colours are roughly 7.8 × `10^7` m and 4.8 × `10^7` m respectively.
(a) Which colour has the greater speed in vacuum?
(b) Which colour has the greater speed in glass?
Which radiation is used for satellite communication?
Name the region beyond the violet end of the spectrum called.
Name three properties of ultraviolet radiations which are similar to visible light.
-
- Calculate the speed of the wave.
- Name the medium through which it is traveling.
To which regions of the electromagnetic spectrum do the following wavelengths belong:
(a) 250 nm
(b) 1500 nm
Define the term "Intensity" in the photon picture of electromagnetic radiation.
Answer briefly.
Give two uses of radio waves.
Write two uses of the following radiation.
X-rays