The phenomenon of diffraction occurs due to the tendency of waves to spread when they encounter an opening or obstacle. Single-slit diffraction is a phenomenon observed when a wave passes through a narrow opening, such as a slit, and spreads out after passing through it. The degree of diffraction depends on the dimensions of the aperture in relation to the wavelength of the incident wave. Statement: A slit of width a is illuminated with white light. For what value of slit width will we have the first minimum for blue light, with ? = 450 ??, appearing at ? = 25th? Question options: a) 1.50 µm b) 1.98µm c) 1.05µm d) 3.60 µm e) 0.37µm

In a realistic two‑slit experiment, you see two interference effects described in this chapter. There is the large‑scale interference pattern from diffraction that depends on the width of each slit, and within that pattern there is the small‑scale interference pattern that depends on the separation distance between the slits. For a slit width of 0.040 mm and a slit separation of 0.50 mm,what is the number n1 of bright two‑slit interference fringes that fit inside the central bright fringe of the diffraction pattern (from the first dark fringe on one side of the center to the first dark fringe on the other side) if the laser has a wavelength of 700 nm? n1 = ? For the same slit width and slit separation, what is the number n2 of bright two‑slit interference fringes that fit inside the central bright fringe of the diffraction pattern if the laser has a wavelength of 490 nm? n2 = ?

In a single slit diffraction, what is the angular width of the central bright region? Where, the wavelength of incident light is 550 nm and the width of slit w= 0.2 mm. O 0.45° O 0.17° 0.086° O 0.315° O 0.13º

In a Young's double-slit experiment, the separation between slits is d and the screen is a distance R from the slits. R is much greater than d and > is the wavelength of the light. The number of bright fringes per unit width on the screen is: d/RX R/dλ Rd/λ X/Rd Rλ/d

The following is the interference pattern from laser light on a double slit. 0 cm 10 cm Which of the following shows the interference pattern when the distance between the slits (d) is increased? A B 0 cm 0 cm 10 cm 20 cm 10 cm 20 cm 20 cm

One way to determine the index of refraction of a gas is to use an interferometer. As shown below, one of the beams of an interferometer passes through a glass container that has a length of L = 1.8 cm. Initially the glass container is a vacuum. When gas is slowly allowed into the container, a total of 6894 dark fringes move past the reference line. The laser has a wavelength of 635 nm (this is the wavelength when the light from the laser is moving through a vacuum). A.) Determine how many wavelengths will fit into the glass container when it is a vacuum. Since the light passes through the container twice, you need to determine how many wavelengths will fit into a glass container that has a length of 2L.number of wavelengths (vacuum) = B.) The number of dark fringes is the difference between the number of wavelengths that fit in the container (length of 2L) when it has gas and the number of wavelengths that fit in the container (length of 2L) when it is a vacuum. Use this knowledge to…

The interference figure of a set of double slits is measured at a stop. The experiment is performed with a laser with a wavelength of 450nm (approach the speed of light to 300,000 km/s in this situation) and it is measured that the interference maximum m=2 is 10mm away from the main maximum.Then, 2 pieces of glass are placed in front of each of the slits. The piece of glass P1 causes a delay in the wave (in relation to a wave that propagates in the air) of 7.5x10^(-16)sThe piece of P2 glass causes a delay of 3.75x10^(-16)s. How many mm will the main maximum be shifted from the initial position?a)1.25 towards P1b)1.25 towards P2c)1.50 towards P1d)1.50 towards P2e)1.75 towards P1f)1.75 towards P2g)2.00 towards P1h)2.00 towards P2i)2.25 towards P1j)2.25 towards P2

In the figure, a broad beam of light of wavelength 610 nm is incident at 90 on a thin, wedge-shaped film with index of refraction 1.45. An observer intercepting the light transmitted by the film sees 10.0 bright and 9 dark fringes along the length of the film. By how much does the film thickness change over this length? Incilent light

Light with wavelength å passes through a narrow slit of width w and is seen on a screen which is located at a distance D in front of the slit. The first minimum of the diffraction pattern is at distance d from the middle of the central maximum. Calculate the wavelength of light if D=2.5 m, d=1 mm and w = VAD. Give your answer in nanometers.

Light waves with two different wavelengths, 642 nm and 474 nm, pass simultaneously through a single slit whose width is 9.68×10-5 m and strike a screen 2.00 m from the slit. Two diffraction patterns are formed on the screen. What is the distance (in cm) between the common center of the diffraction patterns and the first occurrence of the spot where a dark fringe from one pattern falls on top of a dark fringe from the other pattern?