Advertisements
Advertisements
Question
Name the phenomenon which shows the quantum nature of electromagnetic radiation.
Solution
Photoelectric effect is the phenomenon which shows the quantum nature of electromagnetic radiation.
RELATED QUESTIONS
What physical quantity is the same for X-rays of wavelength 10−10 m, red light of wavelength 6800 Å and radiowaves of wavelength 500 m?
State Moseley's law
Give one use of ultraviolet radiation.
Visible light passing through a circular hole forms a diffraction disc of radius 0.1 mm on a screen. If an X-ray is passed through the same setup, the radius of the diffraction disc will be
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?
State the name and the range of wavelength of the invisible electromagnetic waves beyond the red end of the visible spectrum.
What are the ultraviolet rays?
For television broadcasting, the frequency employed is normally
Write two uses of the following radiation.
X-rays