Advertisements
Advertisements
प्रश्न
Identify the part of the electromagnetic spectrum used in
(i) radar and
(ii) eye surgery. Write their frequency range.
Advertisements
उत्तर
The microwave range of the electromagnetic spectrum with frequency range 1.6 to 300 GHz and wavelength range 187 to 10 mm are used in operating radar and ultraviolet range with frequency 8 x 1014 Hz to 3 x 1016 Hz and wavelength 400 nm to 10 nm are used in eye surgery.
APPEARS IN
संबंधित प्रश्न
Identify the part of the electromagnetic spectrum which is:
produced by bombarding a metal target by high speed electrons.
Why are infra-red waves often called heat waves? Explain.
Name of physical quantity which remains same for microwaves of wavelength 1 mm and UV radiations of 1600 Å in vacuum.
Name three radiations and their wavelength range which are invisible and beyond the violet end of the visible spectrum.
Define the term "Intensity" in the photon picture of electromagnetic radiation.
Name two sources of ultraviolet radiation.
State three properties of ultra-violet radiation similar to visible light.
Answer briefly.
What is a carrier wave?
SONAR emits which of the following waves?
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?
