A beam of light is emitted 8.0 cm beneath the surface of a liquid and strikes the surface 7.5 cm from the point directly above the source. Part A If total internal reflection occurs, what can you say about the index of refraction of the liquid? Express your answer using two significant figures. ΑΣΦ nliquid > Submit Request Answer Provide Feedback Constant

Calculate the index of refraction for a medium in which the speed of light is 2.120108m/s , and identify the most likely substance based on Table 1.1.

The angle been the axes of two polarizing filters is 45.00. By how much does the second filter reduce the intensity of the light coming through the first?

What is Brewster’s angle for light traveling in water that is reflected from crown glass?

To save money on making military aircraft invisible to radar, an inventor decides to coat them with a nonreflective material having an index of refraction of 1.20, which is between that of air and the surface of the plane. This, he reasons, should be much cheaper than designing Stealth bombers. (a) What thickness should the coating be to inhibit the reflection of 4.00-cm wavelength radar? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?

If the light source in the preceding problem is changed, the angular position of the third maximum is found to be 0.57°. What is the wavelength of light being used now?

A Michelson interferometer is used to measure the wavelength of light put through it. When the movable mirror is moved by exactly 0.100 mm, the number of fringes observed moving through is 316. What is the wavelength of the light?

A He-Ne laser beam is reflected from the surface of a CD onto a wall. The brightest spot is the reflected beam at an angle equal to the angle of incidence. However, fringes are also observed. If the wall is 1.50 m from the CD, and the first fringe is 0.600 m from the central maximum, what is the spacing of grooves on the CD?

What is the speed of light in air? In crown glass?

Check Your Understanding Table 1.1 shows that ethanol and fresh water have very similar indices of refraction. By what percentage do the speeds of light in these liquids differ?