हिंदी

Name of Physical Quantity Which Remains Same for Microwaves of Wavelength 1 Mm and Uv Radiations of 1600 å in Vacuum.

Advertisements
Advertisements

प्रश्न

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

Advertisements

उत्तर

Both microwaves and UV rays are a part of the electromagnetic spectrum. Thus, the physical quantity that remains same for both types of radiation will be their speeds, equal to c.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2011-2012 (March) Delhi Set 1

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

If the earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain.


Name the rays or waves  of highest frequency .


What are ultraviolet radiations?


Mark the correct options.
(a) An atom with a vacancy has smaller energy that a neutral atom.
(b) K X-ray is emitted when a hole makes a jump from the K shell to some other shell.
(c) The wavelength of K X-ray is smaller than the wavelength of L X-ray of the same material.
(d) The wavelength of Kα X-ray is smaller than the wavelength of Kβ X-ray of the same material.


What potential difference should be applied across an X-ray tube to get X-ray of wavelength not less than 0.10 nm? What is the maximum energy of a photon of this X-ray in joule?

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


The Kβ X-rays from certain elements are given below. Draw a Moseley-type plot of √v versus Z for Kβ radiation.

Element Ne P Ca Mn Zn Br
Energy (keV) 0.858 2.14 4.02 6.51 9.57 13.3

An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm.
    1. Calculate the speed of the wave.
    2. Name the medium through which it is traveling.

To which regions of the electromagnetic spectrum do the following wavelengths belong: 
(a) 250 nm 
(b) 1500 nm 


Answer briefly.

Does an ordinary electric lamp emit EM waves?


What happens to the intensity of light from a bulb if the distance from the bulb is doubled? As a laser beam travels across the length of a room, its intensity essentially remains constant. What geometrical characteristic of LASER beam is responsible for the constant intensity which is missing in the case of light from the bulb?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×