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प्रश्न
Write two uses of the following radiation.
X-rays
Give any two uses of X-rays.
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उत्तर
- X-rays are used in medical diagnostics to find bone fractures, lung TB, gall bladder stones, and kidney stones.
- They are employed in engineering to inspect bridge defects.
- To inspect industrial materials for cracks or defects.
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संबंधित प्रश्न
To which part of the electromagnetic spectrum does a wave of frequency 5 × 1011 Hz belong?
(a) Give a list of at least five radiations, in order of their increasing frequencies, which make up the complete electromagnetic spectrum.
(b) Which of the radiation mentioned by you in part (a) has the highest penetrating power.
Is it possible that in a Coolidge tube characteristic Lα X-rays are emitted but not Kα X-rays?
The Kα X-rays of aluminium (Z = 13) and zinc (Z = 30) have wavelengths 887 pm and 146 pm respectively. Use Moseley's law √v = a(Z − b) to find the wavelengths of the Kα X-ray of iron (Z = 26).
(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 Ultraviolet rays
Name any two electromagnetic waves which have a frequency higher than that of violet light. State one use of each.
Name two sources of ultraviolet radiation.
Answer briefly.
Why are microwaves used in radar?
Why does microwave oven heats up a food item containing water molecules most efficiently?
How do the wavelengths and frequencies of microwaves compare with those of radio waves?
