Questions from College Physics

Q: A possible means for making an airplane invisible to radar is to

A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 3.00 cm and the index of refraction of the polymer i...

Q: An oil film (n = 1.45) floating on

An oil film (n = 1.45) floating on water is illuminated by white light at normal incidence. The film is 2.80 x 102 nm thick. Find (a) The wavelength and color of the light in the visible spectrum most...

Q: Astronomers observe the chromosphere of the Sun with a filter that passes

Astronomers observe the chromosphere of the Sun with a filter that passes the red hydrogen spectral line of wavelength 656.3 nm, called the Hα line. The filter consists of a transparent dielectric of...

Q: A spacer is cut from a playing card of thickness 2.

A spacer is cut from a playing card of thickness 2.90 x 10-4 m and used to separate one end of two rectangular, optically flat, 3.00 - cm long glass plates with n = 1.55, as in Figure P24.24. Laser li...

Q: An investigator finds a fiber at a crime scene that he wishes

An investigator finds a fiber at a crime scene that he wishes to use as evidence against a suspect. He gives the fiber to a technician to test the properties of the fiber. To measure the diameter of t...

Q: A plano - convex lens with radius of curvature R = 3

A plano - convex lens with radius of curvature R = 3.0 m is in contact with a flat plate of glass. A light source and the observer’s eye are both close to the normal, as shown in Fig...

Q: A thin film of oil (n = 1.45)

A thin film of oil (n = 1.45) of thickness 425 nm with air on both sides is illuminated with white light at normal incidence. Determine (a) The most strongly and (b) The most weakly reflected waveleng...

Q: Nonreflective coatings on camera lenses reduce the loss of light at the

Nonreflective coatings on camera lenses reduce the loss of light at the surfaces of multi-lens systems and prevent internal reflections that might mar the image. Find the minimum thickness of a layer...

Q: A thin film of glycerin (n = 1.473)

A thin film of glycerin (n = 1.473) of thickness 524 nm with air on both sides is illuminated with white light at near normal incidence. What wavelengths will be strongly reflected in the range 300 nm...

Q: Light at 633 nm from a helium–neon laser shines on

Light at 633 nm from a helium–neon laser shines on a pair of parallel slits separated by 1.45 x 10-5 m and an interference pattern is observed on a screen 2.00 m from the plane of the slits. (a) Find...