Physics Wave Optics Level: Misc Level
Discrete spectral lines occur when excitation takes place in a a. solid b. liquid c. gas d. superconductor e.all of these
Physics Wave Optics Level: Misc Level
Which will warm up quicker in sunlight?a. a piece of colored glass b.a piece of clear glass c. both the same
Physics Wave Optics Level: Misc Level
Color depends on what characteristic of light ?a. it, s frequency b.it,s wavenght c. both of these d. neither of these
Physics Wave Optics Level: Misc Level
The main difference between a radio wave and a sound wave is their different a. frequencies b. wavelengths c. energies d. ampitudes e. basic natures
Physics Wave Optics Level: Misc Level
If white light on a pigment that absorbs magenta light, what color will the reflected light appear? (A) yellow (B) cyan (C) green (D) black
Physics Wave Optics Level: Misc Level
Gaussian pulses at a wavelength of 1310 nm traveling through a dispersive media of length L=5 km are each broadened by 5 nanoseconds. What is the maximum data rate that can be transmitted through this material for such pulses?
Physics Wave Optics Level: Misc Level
A fiber has an optical loss of 0.2 dB/km. What is the optical loss of a 50 km length of this fiber in units of dBs?If 1 mW of optical power at a wavelength of I=1550 nm is coupled into this fiber, what will the output power be after 100 km?
Physics Wave Optics Level: Misc Level
Consider a symmetric slab waveguide (or a circular step- index fiber waveguide). If all parameters are held constant except the index of refraction difference between the core and the cladding increases, will the fraction of the energy (of the fundamental propagating mode) in the cladding regions increase, decrease, or remain the same? Explain your answer in detail.
Physics Wave Optics Level: Misc Level
Information is encoded on an electromagnetic wave by modulating the amplitude. As the wave propagates through a dispersive medium, is the velocity of the information given by the group velocity, phase velocity or the speed of light?Does it matter if the information is digital or analogue?
Physics Wave Optics Level: Misc Level
A pulse of light has a gaussian shape in timewith a bandwidth of 3 GHz centered at a wavelength of =1.55 um.Does this pulse travel through a block of glass with a velocity determined by :a) the group velocity , b) the phase velocity, or c) the speed of light in vacuum? Explain how?
Physics Wave Optics Level: Misc Level
How far does a plane wave with a free space wavelength of 980 nm travel in one nanosecond in a material with an index of refraction of 1.5?
Physics Wave Optics Level: Misc Level
What a visible object is receding, its color will....
a) Shift toward the red end of the spectrum.
b) Shift toward the blue end of the spectrum.
c) Not change in the slightest.
Physics Wave Optics Level: Misc Level
When a visible object is receding, its color will:
Not change in the slightest
Shift toward the blue end of the spectrum
Shift toward the red end of the spectruma
Physics Wave Optics Level: Misc Level
The primary difference between x-rays and visible lights is that (one is a wave and the other is a photon ,x-rays are not electromagnetic waves, light is not an electromagnetic wave, or they have different frequencies)
Physics Wave Optics Level: Misc Level
Light of wavelength 0.512 um (in air) enters the water in a swimming pool. The speed of lihgt in water is 0.730 times the speed in air. What is the wavelength of the light in water?nm
