Advertisements
Advertisements
प्रश्न
Name the region beyond the violet end of the spectrum called.
Advertisements
उत्तर
Ultraviolet region.
संबंधित प्रश्न
Name the region beyond the red end of the spectrum.
Characteristic X-rays may be used to identify the element from which they are being emitted. Can continuous X-rays be used for this purpose?
Why is exposure to X-rays injurious to health but not exposure to visible light, when both are electromagnetic waves?
The wavelengths of Kα and Lα X-rays of a material are 21.3 pm and 141 pm respectively. Find the wavelength of Kβ X-ray of the material.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
When 40 kV is applied across an X-ray tube, X-ray is obtained with a maximum frequency of 9.7 × 1018 Hz. Calculate the value of Planck constant from these data.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
An X-ray tube operates at 40 kV. Suppose the electron converts 70% of its energy into a photon at each collision. Find the lowest there wavelengths emitted from the tube. Neglect the energy imparted to the atom with which the electron collides.
(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 Visible light
State three properties of ultra-violet radiation similar to visible light.
The frequency of e. m waves which is best suited .to observed of radius 3 × 10–4 his of the order of
What is the speed of radio waves in vacuum?
