Let us list some of the factors, which could possibly influence the speed of wave propagation:(i) nature of the source.(ii) direction of propagation.(iii) motion of the source and/or observer.(iv) wavelength.(v) intensity of the wave. On which of these factors, if any, does(a) the speed of light in vacuum,(b) the speed of light in a medium (say, glass or water), depend?

Which of the following is least reasonable regarding light waves?    a) Ultraviolet light has a shorter wavelength and lower frequency than visible light.   b) Frequency is equal to the speed of the wave divided by the wavelength of the wave.    c) An apple which appears red in white light would appear black when illuminated by blue light.   d) Light visible to the human eye is the part of the electromagnetic spectrum with wavelengths roughly in the range of 400-700 nanometers.   e) A banana appears yellow because it reflects red and green colors while absorbing blue.

Which statement below is false? O The wavelength of light is the distance between two corresponding points in the wave pattern O The frequency of the light is the number of waves that pass a given point in a second The higher the frequency of light, the longer the wavelength The frequency of light increases as wavelength decreases The higher the frequency of light, the greater its energy

Problem 15:   The wavelengths of visible light range from 400 to 700 nm. Part (a)  What is the maximum frequency of visible light in hertz?  fmax = ______ Part (b)  What is the minimum frequency of visible light in hertz?  fmin = ______

Starting from Maxwell's equations V × V × A = V(V· A) – V²A | in a vacuum, use the identity and show that the electric and magnetic fields satisfy both the equation of a wave and obtain the speed of that wave in the MKS system.

(a) Approximately how long would it take a telephone signal to travel 2790 mi from coast to coast across the United States? (Telephone signals travel at about the speed of light.)=_________ seconds(b) Approximately how long would it take a radio signal to reach the International Space Station (ISS) at an orbital altitude of 350 km?=_________ seconds

An electromagnetic wave of frequency 3.2×1014 Hz falls on a medium of refractive index 4.1. The speed of E-M waves in vacuum is 3×108 m/s. The wavelength of the E-M wave in vacuum, λ0 =  Unit           . The speed of the E-M wave in the medium, v =  Unit           . The wavelength of the E-M wave in the medium, λ =  Unit           . If the incident wave falls from air and the angle of incidence is 17.5°, what is the angle of refraction? The angle of refraction, θr =  Unit

how would you solve this? Light is emitted from the light source, reflects from mirror surface X to the plane mirror, and then to the position of surface Z. By the time the light moves from the X to Z position, mirror surface X will have moved to the position of mirror surface Z. The light then continues to the observer. The distances from the light source and the observer to the rotating mirrors are negligible. The distance from the rotating mirrors to the plane mirror is 35.0 km.If the mirrors are rotating at 480 rev/s, the speed of light calculated from the given information is     a 7.44  10–9 m/s b 1.34  108 m/s c 2.98  10–8 m/s d 3.36  107 m/s

Three electromagnetic waves travel through a certain point P along an x axis. They are polarized parallel to a y axis, with the following variations in their amplitudes. Find their resultant at P. E₁ (5.0 x 10-5 V/m) sin[(3.0 x 1014 rad/s)t] -E2= (6.0 x 10-6 V/m) sin((3.0 x 1014 rad/s)t + 45°] E3 = (6.0 x 10-6 V/m) sin[(3.0 x 1014 rad/s)t-45*] E = ( i i ✓) sin[(i x 1014 )t +