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प्रश्न
Why is exposure to X-rays injurious to health but not exposure to visible light, when both are electromagnetic waves?
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उत्तर
X-rays have more penetrating power compared to visible light. As a result, they can penetrate the human body and can also damage the cells of the body. Prolonged exposure to X-rays can lead to cancer or genetic defects.
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संबंधित प्रश्न
To which part of electromagnetic spectrum does a wave of frequency 3 × 1013 Hz belong?
What is the range of the wavelength of the following electromagnetic waves?
(a)X-rays,
State the approximate range of wavelength associated with the ultraviolet rays.
How are X-rays produced?
Characteristic X-rays may be used to identify the element from which they are being emitted. Can continuous X-rays be used for this purpose?
Is it possible that in a Coolidge tube characteristic Lα X-rays are emitted but not Kα X-rays?
Can a hydrogen atom emit characteristic X-rays?
The Kβ X-ray of argon has a wavelength of 0.36 nm. The minimum energy needed to ionize an argon atom is 16 eV. Find the energy needed to knock out an electron from the K shell of an argon atom.
The Kβ X-rays from certain elements are given below. Draw a Moseley-type plot of √v versus Z for Kβ radiation.
| Element | Ne | P | Ca | Mn | Zn | Br |
| Energy (keV) | 0.858 | 2.14 | 4.02 | 6.51 | 9.57 | 13.3 |
The wavelength of Kα X-ray of tungsten is 21.3 pm. It takes 11.3 keV to knock out an electron from the L shell of a tungsten atom. What should be the minimum accelerating voltage across an X-ray tube having tungsten target which allows production of Kα X-ray?
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Name the scientist who discovered Microwaves
Name the scientist who discovered Ultraviolet rays
Choose the correct option.
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What is time period of the light for which the eye is most sensitive?
Write two uses of the following radiation.
X-rays
