Advertisements
Advertisements
प्रश्न
Which radiation is used for satellite communication?
Advertisements
उत्तर
Microwave is used for satellite communication.
संबंधित प्रश्न
Name the radiations of wavelength just longer than 8 × 10-7m.
Give one use of ultraviolet radiation.
Consider a photon of a continuous X-ray coming from a Coolidge tube. Its energy comes from
For a given material, the energy and wavelength of characteristic X-rays satisfy
(a) E(Kα) > E(Kβ) > E(Kγ)
(b) E(Mα) > E(Lα) > E(Kα)
(c) λ(Kα) > λ(Kβ) > λ(Kγ)
(d) λ(Mα) > λ(Lα) > λ(Kα).
Two waves A and B have wavelength 0.01 Å and 9000 Å respectively.
Name the two waves. compare the speeds of these waves when they travel in vacuum.
Name the part of the electromagnetic spectrum which is:
Suitable for radar systems used in aircraft navigation.
Gamma rays and radio waves travel with the same velocity in free space. Distinguish between them in terms of their origin and the main application.
If the Earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain.
The magnetic field of a beam emerging from a filter facing a floodlight is given by B0 = 12 × 10–8 sin (1.20 × 107z – 3.60 × 1015t) T. What is the average intensity of the beam?
Name the electromagnetic radiation whose frequency is 10 Hz.
