A laser shines on a pair of vertical slits. The horizontal distance L₁ between the laser and the ruler is 12.3 m. The distance L2 between the laser and the slits is 0.511 m. The distance d is .220 mm. The illustration is not to scale. Note that the ruler measures in centimeters. Calculate the wavelength of the light. λ = Intensity 8 4 2 0 2 4 6 8 nn

4. A plane wave of frequency 900 MHz is and travelling along -y direction with the electric field amplitude of 300 V/m (in vacuum). The value of electric field is -300 V at t=0 and y=0. Choose a magnetic field direction and define the polarization. Write the wave equation of the electric and magnetic field.

Question A1 A HeNe laser emits a light beam of wavelength 633 nm in air, with a beam diameter of 3 mm and emitted power of 25 mW. Evaluate: i) the wavenumber ko, ii) the angular frequency w, and iii) the peak amplitude of the electric field E in the laser spot (you may assume beam divergence due to diffraction is negligible). Give the appropriate SI units in each case.

5. A 17.0-mW (milli-Watts) laser puts out a narrow cylindrical beam 2.50 mm in diameter. What is the average rms B-field? T 9 00m 90oo oofls f19

Calculate the wavelengths of the following objects. A 75 kg athlete running a 3.0-minute mile:      m    Earth (mass = 6.0 ×× 1027 g) moving through space at 2.5×104  m/s:     m

The wavelength of light emitted by an argon laser is = 514.5 nm. What is the frequency of these light waves (in Hz)? Hz

Three perfect polarizers are placed in sequence and receive incoming light from one side as shown in the figure below. The first polarizer has its optic axis oriented vertically. The second is oriented ? = 26.0 degrees to one side of vertical. The third is oriented horizontally.What fraction of the incoming intensity gets through the first polarizer? I1/I0 = What fraction of the incoming intensity gets through both the first and second polarizers? I2/I0 = What fraction of the incoming intensity gets through the first, second, and third polarizers? I3/I0 = How much intensity would get through if the second and third polarizers were exchanged? I3/I0 =

A laser emits a beam of monochromatic light with frequency 4.40 x 10^14 Hz. What color is the laser beam?     yellow     blue     violet     red

Learning Goal: To understand polarization of light and how to use Malus's law to calculate the intensity of a beam of light after passing through one or more polarizing filters. The two transverse waves shown in the figure (Figure 1) both travel in the +z direction. The waves differ in that the top wave oscillates horizontally and the bottom wave oscillates vertically. The direction of oscillation of a wave is called the polarization of the wave. The upper wave is described as polarized in the +x direction whereas the lower wave is polarized in the +y direction. In general, waves can be polarized along any direction. Recall that electromagnetic waves, such as visible light, microwaves, and X rays, consist of oscillating electric and magnetic fields. The polarization of an electromagnetic wave refers to the oscillation direction of the electric field, not the magnetic field. In this problem all figures depicting light waves illustrate only the electric field. A linear polarizing filter,…

8. A laser emits a beam of monochromatic light with frequency 5.58 x 10^14 Hz. What color is the laser beam?     red     green     blue     violet