Advertisements
Advertisements
Question
Which one of the following electromagnetic radiation has the least wavelength?
Options
Gamma rays
Microwaves
Visible light
X-rays
Advertisements
Solution
Gamma rays
Explanation:
The electromagnetic spectrum is the dispersion of electromagnetic radiation based on energy. Gamma rays, x-rays, ultraviolet, visible, infrared, microwaves, and radio waves are the seven main categories that it falls under. These zones are given in decreasing energy and frequency and rising wavelength order. Among the main types of electromagnetic radiation, gamma waves have the highest frequencies (most energetic) and shortest wavelengths, whereas radio waves have the lowest frequencies (least energetic) and longest wavelengths. Therefore, the smallest wavelength is that of gamma rays.
RELATED QUESTIONS
(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.
Which radiation is used for satellite communication?
What is the range of the wavelength of the following electromagnetic waves?
(a)X-rays,
An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm Calculate the velocity of the wave.
Which part of electromagnetic spectrum is used in radar systems?
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.)
An electron beam is accelerated by a potential difference V to hit a metallic target to produce X-rays. It produces continuous as well as characteristic X-rays. If λmin is the smallest possible wavelength of X-ray in the spectrum, the variation of log λmin with log V is correctly represented in:
Identify the electromagnetic radiation and write its wavelength range, which is used to kill germs in water purified. Name the two sources of these radiations.
