Physics Wave Optics Level: Misc Level
A ray of light in material # 1 strikes an interface at an angle of 40 dregrees, and the ray of light enters material # 2. In the NEW material, is the speed of light (A) LESS THAN (B) GREATER THAN (C) THE SAME AS, the speed of material # 1?. Or, does the answer depend on the frequency of the light, or is more information needed to be able to answer this question? Explain your answer.
Physics Wave Optics Level: Misc Level
Electrons with K =100 eV are directed at two narrow slits a distance
d apart. If the angle between the central maximum of the resulting interference
pattern and the next maximum is to be one degree, what should d be?
Physics Wave Optics Level: Misc Level
For diffraction by a single slit, what is the effect of increasing (a) the slit width, and (b) the wavelength?
Physics Wave Optics Level: Misc Level
Compare a double- slit experiment for sound waves to that for light waves. Discuss the similarities and differences
Physics Wave Optics Level: Misc Level
Calculate the wavelength in nanometers of green light that has a frequency of 5 x10 Hz.
Physics Wave Optics Level: Misc Level
In a Young s double - slit experiment, a set of parallel slits with a separation of 0.100 mm is illuminated by light having a wavelength of 589 nm and the interference pattern observed on a screen 4.00 m from the slits. (a) What is the difference in path lengths from each of the slits to the screen location of a third -order bright fringe? (b) What is the difference in path lengths from the two slits to the screen location of the third dark fringe away from the center of the pattern?
Physics Wave Optics Level: Misc Level
White light is spread out into its spectral components by a diffraction grating. If the grating has 2 000 lines per centimeter, at what angle does red light of wavelength 640 nm appear in the first -order spectrum?
Physics Wave Optics Level: High School
Dual Nature of Light
An owl has good night vision because its eyes can detect a light intensity as small as 5.0 10-13 W/m2 . What is the minimum number of photons per second that an owl eye can detect if its pupil has a diameter of 7.0 mm and the light has a wavelength of 545 nm ?
Physics Wave Optics Level: High School
An ordinary bright star easily visible to the naked eye emits radiation such that the intensity at the surface of the earth is I = 1.6 x 10^-9 W/m^2 at a wavelength of 560 nm . Estimate the rate at which photons enter the night-adapted eye from such a star . Assume that the pupil diameter is circular , with a diameter of 0.5 cm .
