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प्रश्न
What do you understand by the invisible spectrum?
What is an invisible spectrum?
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उत्तर
The part of spectrum beyond the red and the violet ends is called the invisible spectrum as our eyes do not respond to the spectrum beyond the red and the violet extremes.
संबंधित प्रश्न
What role dose infra-red radiation play in physical therapy?
Name the parts of the electromagnetic spectrum which is
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Moseley's Law for characteristic X-ray is √v = a(Z − b). Here,
The X-ray coming from a Coolidge tube has a cutoff wavelength of 80 pm. Find the kinetic energy of the electrons hitting the target.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
The Kα and Kβ X-rays of molybdenum have wavelengths 0.71 A and 0.63 A respectively. Find the wavelength of Lα X-ray of molybdenum.
Answer briefly.
What are radio waves?
If the Earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain.
Photons of an electromagnetic radiation has an energy 11 keV each. To which region of electromagnetic spectrum does it belong?
At what speed do all electromagnetic waves travel in a vacuum?
How do ultraviolet rays compare with visible light?
