Correct answer
C. Space waves
Explanation
Space waves are used for line-of-sight communication, such as in radio and television broadcasting.
Due to the relative motion of observer and frame of reference time:
Oil rises up to wick in a lamp because_____________?
When two charges are placed in water then the Coulomb force between them reduces to _____________?
When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used ?
When an electron moving with a uniform speed in a vacuum enters a magnetic field in a direction perpendicular to the field the subsequent path of the electron is ___________________?
The system which can exchange matter as well as energy with its surroundings is called____________?