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प्रश्न
Identify the part of the electromagnetic spectrum used in
(i) radar and
(ii) eye surgery. Write their frequency range.
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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.
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संबंधित प्रश्न
What is the range of the wavelength of the following electromagnetic waves?
(a) Gamma rays.
The wavelength of X-rays is 0.01 Å. Calculate its frequency. State the assumption made, if any.
Can X-rays be polarised?
Find the energy, the frequency and the momentum of an X-ray photon of wavelength 0.10 nm.
(Use Planck constant h = 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
Name the scientist who discovered
X-rays
Name the radiations used for the detection of fracture in bones.
What are the ultraviolet rays?
Answer briefly.
Why high-frequency carrier waves are used for the transmission of audio signals?
Below is an incomplete table showing the arrangement of electromagnetic spectrum in the increasing order of their wavelength. Complete the table:
| Gamma ray | X - ray | UV rays | Visible rays | Infrared | A | Radio waves |
- Identify the radiation A.
- Name the radiation used to detect fracture in bones.
- Name one property common to both A and Radio waves.
What is the wavelength range of electromagnetic radiation used in radio broadcast?
