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प्रश्न
Name the region beyond the red end of the spectrum.
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उत्तर
Infrared region.
संबंधित प्रश्न
How are infrared waves produced?
Give a reason for the following:
Long-distance radio broadcasts use short-wave bands. Why?
The small ozone layer on top of the stratosphere is crucial for human survival. Why?
Give one use of gamma rays.
Name two sources, each of infrared radiations and ultraviolet radiations.
Which part of electromagnetic spectrum is used in radar systems?
For a given material, the energy and wavelength of characteristic X-rays satisfy
(a) E(Kα) > E(Kβ) > E(Kγ)
(b) E(Mα) > E(Lα) > E(Kα)
(c) λ(Kα) > λ(Kβ) > λ(Kγ)
(d) λ(Mα) > λ(Lα) > λ(Kα).
Answer briefly.
Name the most harmful radiation entering the Earth's atmosphere from outer space.
The frequency of e. m waves which is best suited .to observed of radius 3 × 10–4 his of the order of
