Advertisements
Advertisements
Question
What is the speed of radio waves in vacuum?
Solution
3 × 108 ms-1
APPEARS IN
RELATED QUESTIONS
Name the waves used for taking photographs in dark.
Name of physical quantity which remains same for microwaves of wavelength 1 mm and UV radiations of 1600 Å in vacuum.
An X-ray beam can be deflected
50% of the X-rays coming from a Coolidge tube are able to pass through a 0.1 mm thick aluminium foil. If the potential difference between the target and the filament is increased, the fraction of the X-rays passing through the same foil will be
Name the scientist who discovered Microwaves
State three properties of infrared radiations similar to that of visible light.
Answer briefly.
Give two uses of radio waves.
Name the e.m. waves which are suitable for radar systems used in aircraft navigation. Write the range of frequency of these waves.
Photons of an electromagnetic radiation has an energy 11 keV each. To which region of electromagnetic spectrum does it belong?
