Advertisements
Advertisements
प्रश्न
Why are microwaves considered suitable for radar systems used in aircraft navigation?
Advertisements
उत्तर
Microwaves are considered suitable for radar systems used in aircraft navigation because they have a short wavelength range (10−3 m–0.3 m), which makes them suitable for long-distance communication.
संबंधित प्रश्न
Name the radiations of wavelength just longer than 8 × 10-7m.
Give one use of gamma rays.
Why is exposure to X-rays injurious to health but not exposure to visible light, when both are electromagnetic waves?
Consider a photon of a continuous X-ray coming from a Coolidge tube. Its energy comes from
A certain element emits Kα X-ray of energy 3.69 keV. Use the data from the previous problem to identify the element.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
Name the scientist who discovered Infra-red waves
State three properties of ultra-violet radiation similar to visible light.
Radio waves of constant amplitude can be generated with.
The electric field intensity produced by the radiations coming from 100 W bulb at a 3 m distance is E. The electric field intensity produced by the radiations coming from 50 W bulb at the same distance is ______.
Name the electromagnetic radiation that has been used in obtaining the image below.

