A laser beam is incident on two slits with separation d = 0.026 mm. A screen is placed L = 2.2 m from the slits. The wavelength of the laser light is λ = 3250 Å. θ1 and θ2 are the angles to the first and second bright fringes above the center of the screen. a) Express the distance between the two bright fringes on the screen, y, in terms of θ1 , θ2, and L .  b) Solve for the numerical value of y in meters.

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 0.380 mm. Intensity 3 L2 2 1 1 L The illustration is not to scale. Note that the ruler measures in centimeters. Calculate the wavelength å of the light. 4- 2. 3. H

Two sources of electromagnetic waves (light waves) are emitting coherent waves at a frequency of 546 THz. These two sources are located a distance d apart and aimed at point A, as shown below. If the top source is located a distance 3.8 meters away from point A, find the minimum distance d that will give destructive interreference. Enter your answer in millimeters. 4₁1 Laser Laser d A

A laser beam is incident on two slits with separation d = 0.016 mm. A screen is placed L = 4.8 m from the slits. The wavelength of the laser light is λ = 1500 Å. θ1 and θ2 are the angles to the first and second bright fringes above the center of the screen. 1. Express sin(θ1) in terms of d and λ.  2. Express sin(θ2) in terms of d and λ.  3. Express the distance between the two bright fringes on the screen, y, in terms of θ1, θ2 and L.  4.  Solve for the numerical value of y in meters.

Ascientist notices that an oil slick floating on water when viewed from above has many different colors reflecting off the surface, making tlook rainbow-like (an effect known as iridescence). She aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). The index of refraction of water is 1.33. Part A The index of refraction of the oil is 1.20. What is the minimum thíckness t of the ol slick at that spot? Express your answer in nanometers to three significant figures. > View Available Hint(s) Submit Part B Suppose the oll had an index of retraction of 1.50. What would the minimum thickness t be now? Express your answer in nanometers to three significant figures. > View Available Hint(s) nm

Polarized light passes through two rotated filters from left to right, as shown. At the point A, its intensity is Io. The polarization axis of the first polarizer makes an angle 01= 52.6° with the direction of polarization the incoming light. The polarization axis of the second polarizer makes an angle 02= 59.6° degrees with the polarization axis of the first polarizer. E Polarized В light The intensity of light at the point C is:

Three polarizing filters are stacked, with the polarizing axis of the second and third filters at angles of 24.0° and 62.0°, respectively, to that of the first. If unpolarized light is incident on the stack, the light has an intensity of 69.5 W/cm² after it passes through the stack. Part A If the incident intensity is kept constant but the second polarizer is removed, what is the intensity of the light after it has passed through the stack? Express your answer with the appropriate units. I = Value W cm² www. Submit Previous Answers Request Answer ?

a. What is the angular separation between the third order fringe and the central fringe?

A.) Polarized light is incident on 5 polarizing sheets. The axis of the first polarized sheet makes an angle with the plane of polarization. Each subsequent sheet has an axis that is rotated by an angle from that of adjacent sheets. Find if 40% of the incident intensity is transmitted by the sheets. B.) Suppose you want to rotate the plane of polarization of a beam of polarized light by 82°, but you do not want the final intensity to be less than 57% of the initial intensity. What is the minimum number of polarizing sheets you must use? Assume that each sheet is rotated the same angle relative to the adjacent sheets. sheets

The wavelength limits of human vision are 400 nm to 700 nm.  A. Find the minimum frequency of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. B. Find the maximum frequency of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. C.Find the minimum wavelenght of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. D. Find the maximum wavelenght of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. (Item 4)