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प्रश्न
Name the scientist who discovered
X-rays
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उत्तर
Roentgen
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संबंधित प्रश्न
An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm Calculate the velocity of the wave.
The electric current in an X-ray tube (from the target to the filament) operating at 40 kV is 10 mA. Assume that on an average, 1% of the total kinetic energy of the electron hitting hte target are converted into X-rays.
(a) What is the total power emitted as X-rays and (b) how much heat is produced in the target every second?
Name the scientist who discovered Ultraviolet rays
To which regions of the electromagnetic spectrum do the following wavelengths belong:
(a) 250 nm
(b) 1500 nm
Give one use of electromagnetic radiation in Microwaves.
If λv, λx and λm Am represents the wavelength of visible light, x-ray and microwaves respectively, then ______.
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Identify the electromagnetic wave whose wavelength range is from about 10-12 m to about 10-8 m. Write one use of this.
Identify the electromagnetic wave whose wavelength range is from about 10-3 m to about 10-1 m. Write one use of this.
Which electromagnetic radiation has the highest frequency and shortest wavelength?
