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प्रश्न
State two uses of infrared radiations.
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उत्तर
(i) For therapeutic purposes.
(ii) In night photography.
संबंधित प्रश्न
Why are microwaves considered suitable for radar systems used in aircraft navigation?
(a) Give a list of at least five radiations, in order of their increasing frequencies, which make up the complete electromagnetic spectrum.
(b) Which of the radiation mentioned by you in part (a) has the highest penetrating power.
What is the range of the wavelength of the following electromagnetic waves?
(A) Radio waves.
Name the region beyond the red end of the spectrum.
Name the region beyond the violet end of the spectrum called.
One of the following wavelengths is absent and the rest are present in the X-rays coming from a Coolidge tube. Which one is the absent wavelength?
Name the part of the electromagnetic spectrum which is:
Suitable for radar systems used in aircraft navigation.
Name the radiations used for the detection of fracture in bones.
Answer briefly.
Does an ordinary electric lamp emit EM waves?
What is the speed of radio waves in vacuum?
