soap bubble (n = 1.35) is floating in air. If the thickness of the bubble wall is 300 nm, which of the following wavelengths of visible light is strongly reflected? A) 620 nm (red) B) 580 nm (yellow) C) 540 nm (green) D) 500 nm (blue) Why does m=1?

A light ray whose frequency is 7.00 × 1014 Hz in vacuum is incident on glass (n = 1.50). Determine the wavelength of the light after it enters the glass (in nm).      (c = 3 x 108 m/s)

Axis Sample Problem: An unpolarized light with an intensity of 100 W/m? passes through two polarizing filters that are oriented at an angle of 40° to each other. What is the intensity of the light that emerges from each Axis Unpolarized light other? Polarized light Given: Solution: 1, = 100 W/m? 1= % lo l = ½ (100) h = 50 W/m? 2 = Iocos20 2 = (50) cos?(40) = (50)(0.77)? = (50)(0.59) 2= 29.5 W/m? Polarizer Analyzer e = 40° %3D Figure 1. When unpolarized light is incident on the first polarizer the intensity of the transmitted light is exactly half (50%) no matter how the polarizing axis is oriented. The brightness of the polarized light decreases as the angle, e, increases between the transmission axis of the second polarizer and the plane of polarization of the light. ACTIVITY: Calculate the following problems using Malus' Law. 1. A beam of unpolarized light with an intensity of 75 W/m? passes through two polarizing filters that are 55° with respect to each other. What is the intensity…

An ideal polarizing sheet transmits 90% of the incident partially polarized light. The polarizing sheet is now rotated through 45 degrees; during the rotation process the transmitted light monotonically decreases in intensity. What fraction of the incident intensity now passes? O a. 0% O b. between 40% and 90% O c. Between 50% and 80% O d. 50% O e. Between 0 and 50%