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प्रश्न
How will you investigate the existence of the radiation beyond the red and violet extremes of the spectrum?
उत्तर
If a blackened bulb thermometer is moved from the violet end towards the red end, first a steady rise in temperature is observed, but as the thermometer goes beyond the red end, there is a rapid rise in temperature. This shows the existence of some kind of radiation producing the heating effect beyond the red end of the spectrum.
If the radiations from the red end to the violet end are made to fall on the silver chloride solution, it almost remains unaffected beyond the violet end of the spectrum.
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संबंधित प्रश्न
What is the range of the wavelength of the following electromagnetic waves?
(a)X-rays,
Name the region beyond the violet end of the spectrum called.
State the approximate range of wavelength associated with visible light.
Name the rays or waves of highest frequency .
Name of physical quantity which remains same for microwaves of wavelength 1 mm and UV radiations of 1600 Å in vacuum.
If the current in the circuit for heating the filament is increased, the cutoff wavelength
Arrange the following electromagnetic waves in increasing order of their frequencies (i.e. begin with the lowest frequency):
Visible light, y rays, X rays, microwaves, radio waves, infrared radiations, and ultraviolet radiation.
Answer the following question.
Gamma rays and radio waves travel with the same velocity in free space. Distinguish between them in terms of their origin and the main application.
Name any two electromagnetic waves which have a frequency higher than that of violet light. State one use of each.
The ratio of contributions made by the electric field and magnetic field components to the intensity of an EM wave is ______.
