Advertisements
Advertisements
प्रश्न
Give any two uses of infrared waves.
उत्तर
Uses: For therapeutic purposes and long distance photography.
APPEARS IN
संबंधित प्रश्न
Identify the part of the electromagnetic spectrum which is:
produced by bombarding a metal target by high speed electrons.
What is the range of the wavelength of the following electromagnetic waves?
(a) Infrared.
Name the waves of wavelength nearly 0.1 nm.
Consider a photon of a continuous X-ray coming from a Coolidge tube. Its energy comes from
Frequencies of Kα X-rays of different materials are measured. Which one of the graphs in the figure may represent the relation between the frequency v and the atomic number Z ?
The Kα and Kβ X-rays of molybdenum have wavelengths 0.71 A and 0.63 A respectively. Find the wavelength of Lα X-ray of molybdenum.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
To which regions of the electromagnetic spectrum do the following wavelengths belong:
(a) 250 nm
(b) 1500 nm
Name the e.m. waves which are suitable for radar systems used in aircraft navigation. Write the range of frequency of these waves.
An e.m. wave exerts pressure on the surface on which it is incident. Justify.
What is the wavelength range of electromagnetic radiation used in radio broadcast?
