To understand the relationships among the parameters that characterize a wave. it is of fundamental importance in many areas of physics to be able to deal with waves. this problem will lead you to understand the relationship of variables related to wave propagation: frequency, wavelength, velocity of propagation, and related variables. note that these are kinematic variables that relate to the wave's propagation and do not depend on its amplitude.



a. traveling waves propagate with a fixed speed usually denoted as v (but sometimes c). the waves are called if their waveform repeats every time interval t.

-transverse

-longitudinal

-periodic

-sinusoidal

The correct option is (c) "periodic wave"

Explanation:

The relationship between the angular frequency and the radial frequency is :

f is the radial frequency

Frequency, wavelength, velocity of propagation, and related variables do not depend on the amplitude of wave. Travelling waves are also known as periodic wave if their waveform repeats every time interval T. Frequency, wavelength and the speed of wave are the factors that defines traveling waves.

So, the correct option is (c) "periodic wave".

powerful computers now, not then

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.