Advertisements
Advertisements
Question
Name the region beyond the red end of the spectrum.
Advertisements
Solution
Infrared region.
RELATED QUESTIONS
If the earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain.
Name the subjective property of light related to its wavelength.
Which radiation is used for satellite communication?
What is the range of the wavelength of the following electromagnetic waves?
(a)X-rays,
Iron emits Kα X-ray of energy 6.4 keV. Calculate the times taken by an iron Kα photon to cross through a distance of 3 km.
(Use Planck constant h = 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
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?
(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 Infra-red waves
Name the radiation of the electromagnetic spectrum which is used for the following:
Radar and Give the frequency range.
A bat moving at 10 ms−1 towards a wall sends a sound signal of 8000 Hz towards it. On reflection, it hears a sound of frequency f The value of f in Hz is close to (speed of sound = 320 ms−1)
A radio can tune to any station in the 7.5 mHz to 12 MHz band. What is corresponding wave length band.
