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प्रश्न
Arrange the following radiations in the order of their increasing wavelength:
X-rays, infrared rays, ratio waves, gamma ray and microwaves.
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उत्तर
Gamma rays < X-rays < infrared rays < micro waves < radio waves.
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संबंधित प्रश्न
Give a reason for the following:
Long-distance radio broadcasts use short-wave bands. Why?
Name the region beyond the violet end of the spectrum called.
Name the waves produced by the changes in the nucleus of an atom.
X-ray and visible light travel at the same speed in vacuum. Do they travel at the same speed in glass?
Consider a photon of a continuous X-ray coming from a Coolidge tube. Its energy comes from
Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristic K or L X-ray. The energy levels of the tungsten atom with an electron knocked out are as follows.
| Cell containing vacancy | K | L | M |
| Energy in keV | 69.5 | 11.3 | 2.3 |
Name the scientist who discovered Microwaves
Identify the part of the electromagnetic spectrum used in
(i) radar and
(ii) eye surgery. Write their frequency range.
State three properties of ultra-violet radiation similar to visible light.
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.
