मराठी

Name three radiations and their wavelength range which are invisible and beyond the violet end of the visible spectrum.

Advertisements
Advertisements

प्रश्न

Name three radiations and their wavelength range which are invisible and beyond the violet end of the visible spectrum.

एका वाक्यात उत्तर
Advertisements

उत्तर

The three radiations beyond the violet end of the visible spectrum are:

  1. Ultraviolet radiation: 100 Å to 4000 Å
  2. X-rays: 0.1 Å to 100 Å
  3. Gamma rays: <0.1 Å
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Spectrum - EXERCISE - 6 (B) [पृष्ठ १४४]

APPEARS IN

सेलिना Concise Physics [English] Class 10 ICSE
पाठ 6 Spectrum
EXERCISE - 6 (B) | Q 7. | पृष्ठ १४४

संबंधित प्रश्‍न

Name the parts of the electromagnetic spectrum which is

used to treat muscular strain.

Write in brief, how these waves can be produced.


Name of physical quantity which remains same for microwaves of wavelength 1 mm and UV radiations of 1600 Å in vacuum.


The Kβ X-ray of argon has a wavelength of 0.36 nm. The minimum energy needed to ionize an argon atom is 16 eV. Find the energy needed to knock out an electron from the K shell of an argon atom.


Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristic K or L X-ray. The energy levels of the tungsten atom with an electron knocked out are as follows.

Cell containing vacancy K L M
Energy in keV 69.5 11.3 2.3

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.


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.

(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)


The energy of a silver atom with a vacancy in K shell is 25.31 keV, in L shell is 3.56 keV and in M shell is 0.530 keV higher than the energy of the atom with no vacancy. Find the frequency of Kα, Kβ and Lα X-rays of silver.

(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)


In uranium (Z = 92) the K absorption edge is 0.107 Å and the Kα line is 0.126 Å, and the wavelength of the L absorption edge is ______.


Name two electromagnetic waves of wavelength smaller than that of violet light.


How do ultraviolet rays compare with visible light?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×