Advertisements
Advertisements
प्रश्न
Give one use of electromagnetic radiation in Ultraviolet radiation.
Advertisements
उत्तर
Ultraviolet radiation is used for sterilizing purposes.
संबंधित प्रश्न
Why are microwaves considered suitable for radar systems used in aircraft navigation?
A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?
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?
What is the range of the wavelength of the following electromagnetic waves?
(a) Micro waves .
X-ray from a Coolidge tube is incident on a thin aluminium foil. The intensity of the X-ray transmitted by the foil is found to be I0. The heating current is increased to increase the temperature of the filament. The intensity of the X-ray transmitted by the foil will be
(a) zero
(b) < I0
(c) I0
(d) > I0
Name the scientist who discovered
X-rays
Name the scientist who discovered Visible light
Give one use of electromagnetic radiations in Infrared radiation.
The frequency of x-rays, y-rays and ultraviolet rays are respectively a, b and c. Then:-
What happens when an electron collides with a positron?
