SSM In Fig. 35-45, a broad beam of light of wavelength 683 nm is sent directly downward through the top plate of a pair of glass plates. The plates are 120 mm long, touch at the left end, and are separated by 48.0 μm at the right end. The air between the plates acts as a thin film. How many bright fringes will be seen by an observer looking down through the top plate? Figure 35-45 Problems 70–74.
SSM In Fig. 35-45, a broad beam of light of wavelength 683 nm is sent directly downward through the top plate of a pair of glass plates. The plates are 120 mm long, touch at the left end, and are separated by 48.0 μm at the right end. The air between the plates acts as a thin film. How many bright fringes will be seen by an observer looking down through the top plate? Figure 35-45 Problems 70–74.
SSM In Fig. 35-45, a broad beam of light of wavelength 683 nm is sent directly downward through the top plate of a pair of glass plates. The plates are 120 mm long, touch at the left end, and are separated by 48.0 μm at the right end. The air between the plates acts as a thin film. How many bright fringes will be seen by an observer looking down through the top plate?
www In Fig. 35-48,
an airtight chamber of length d
5.0 cm is placed in one of the arms
of a Michelson interferometer. (The
glass window on each end of the cham-
ber has negligible thickness.) Light of
wavelength A = 500 nm is used.
Evacuating the air from the chamber
causes a shift of 60 bright fringes. From
these data and to six significant figures,
81 SSM
Mirror
%3D
Source
Mirror
To vacuum
find the index of refraction of air at
pump
atmospheric pressure.
103 In Fig. 35-59, an oil drop (n = 1.20) floats on the surface of wa-
ter (n = 1.33) and is viewed from overhead when illuminated by sun-
light shining vertically downward and reflected vertically upward. (a)
Are the outer (thinnest) regions of the drop bright or dark? The oil
film displays several spectra of colors. (b) Move from the rim inward
to the third blue band and, using a wavelength of 475 nm for blue
light, determine the film thickness there. (c) If the oil thickness in-
creases, why do the colors gradually fade and then disappear?
%3D
Oil
Water
Figure 35-59 Problem 103.
(c) The electric fields from two e/m waves are described by E1 = 10.0 cos(kr – wt) N/C and
E2 = 15.0 cos(kr – wt + 60°) N/C. What is the phase of the resultant electric field (in degrees)?
(d) Electrons moving at a speed of 30 m/s pass through a single slit of diameter 8.5 x 10-5 m. A
diffraction pattern forms, due to the wave nature of the electrons. At what angle (in degrees) is the
first-order minimum of this pattern located?
(e) A neutron (with mass m, = 939.566 MeV/c²) is confined inside a nucleus of the most common isotop
of iron, Fe. Assume the nucleus is spherical, and that the uncertainty in the position of the neutron is
the diameter, not the radius, of the nucleus. What is the minimum uncertainty in the velocity of the
neutron, in m/s?
College Physics: A Strategic Approach (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.