Advertisements
Advertisements
Question
What do you understand by the statement, "Electromagnetic waves transport momentum"?
Advertisements
Solution
If we consider a plane perpendicular to the direction of propagation of the electromagnetic wave then electric charges present on the plane will be set and sustained in motion by the electric and magnetic fields of the electromagnetic wave. The charges present on the surface thus acquire energy and momentum from the waves. This just illustrates the fact that an electromagnetic wave (like other waves) transfers energy and momentum.
APPEARS IN
RELATED QUESTIONS
Name the parts of the electromagnetic spectrum which is
used as a diagnostic tool in medicine.
Write in brief, how these waves can be produced.
State an additional use of the X-rays waves
Name the radiations of wavelength just longer than 8 × 10-7m.
The energy of a photon of a characteristic X-ray from a Coolidge tube comes from
Moseley's Law for characteristic X-ray is √v = a(Z − b). Here,
Write the range of the wavelength of the following electromagnetic radiations:
(a) Infrared rays
(b) Ultraviolet rays
(c) γ -rays
Write one use of each of the above.
State two uses of infrared radiations.
Answer briefly.
Why high-frequency carrier waves are used for the transmission of audio signals?
X-rays, gamma rays and microwaves travelling in a vacuum have ______.
Arrange the following electromagnetic radiation in the ascending order of their frequencies:
X-rays, microwaves, gamma rays, radio waves
