A tank of gasoline (n = 1.40) is open to the air (n = 1.00). A thin film of liquid floats on the gasoline and has a refractive index that is between 1.00 and 1.40. Light that has a wavelength of 622 nm (in vacuum) shines perpendicularly down through the air onto this film, and in this light the film looks bright due to constructive interference. The thickness of the film is 252 nm and is the minimum nonzero thickness for which constructive interference can occur. What is the refractive index of the film?

Q: In your research lab, a very thin, flat piece of glass with refractive index 1.40 and uniform…

A:

Q: You are standing in air and are looking at a flat piece of glass (n = 1.52) on which there is a…

A:

Q: Light of wavelength 647 nm is incident perpendicularly on a soap film (with n = 1.35) suspended in…

A: Given that the value of wavelength. Then We have to determine the value of smallest thickness and…

Q: ?glass=1.52, has a 119 nm thick antireflective film coating one side, ?film=1.35. White light,…

A: Givennglass=1.52Thickness, d=119 nm=119×10-9 mnfilm=1.35

Q: thin polymer (n = 1.6) coating is applied to the glass (n = 1.4).  What is the minimum thickness of…

A: Given:            np=1.6ng= 1.4λ= 650 nm   Minimum thickness of coating formula is given as:…

Q: A thin film of oil (n= 1.42) and of thickness 83 nm is floating on water (n=1.33). What is the…

A:

Q: You are measuring the wavelength of light from a certain single-colour source. You direct the light…

A:

Q: A thin layer of glass (n = 1.50) floats on a transparent liquid (n = 1.34). The glass is illuminated…

A:

Q: You are looking straight at a soap bubble and it appears yellow-green; that is, you see constructive…

A:

Q: A 634-nm-thick soap film (n = 1.48) in air is illuminated with white light in a direction…

A:

Q: Plastic coatings are put in a car's glass window (n = 1.52) in order to keep the interior of cars…

A: Given:-  Plastic coatings are put in a car's glass window (n = 1.52) the index of refraction of the…

Q: An oil film with refractive index 1.48 and thickness 290 nm is floating on water and illuminated…

A: Given, Refractive index, k = 1.48 Thickness, t = 290 nm = 290 x 10-9 m

Q: Kerosene (n = 1.20) was spilled on the water in the ocean (n = 1.30) creating a large thin layer.…

A: a) Formula for constructive interference of light waves reflected by a thin film is given by, 2t =…

Q: A thin film of oil (n = 1.4) of thickness 1.38micrometers. is compressed between two glass slabs (n…

A:

Q: Two rectangular glass plates (n = 1.60) are in contact along one edge and are separated along the…

A:

Q: A film of soapy water (n = 1.33) on top of a plastic cutting board has a thickness of 231 nm.…

A: Write the given values with the suitable variables. n=1.33t=231 nm Here, n is the refractive index…

Q: A flat piece of glass is held stationary and horizontal above the highly polished, flat top end of a…

A: Given,  Length of the rod L=8.5 cm  wavelength λ=530 nm ∆T=21.5°C

Q: A uniform film of oil (n = 1.31) is floating on water. When sunlight in air is incident normally on…

A: In case of thin film interface, for oil floating on the water, Condition for brightness or…

Q: Problem 1: A thin film of acetone (n = 1.25) coats a thick glass plate (n = 1.50). White light is…

A:

Q: An oil slick on water is 144 nm thick and illuminated by light of all wavelengths incident at a 30°…

A: Answer:  Given, Thickness of oil slick is, d=144nm Angle of incidence = 30° Refractive index of oil…

Q: A thin film of oil (no = 1.5) with varying thickness floats on water (n = 1.33). When it is…

A: (a)At point A on the figure 24.60 the thickness of layer of oil is very small and is negligible as…

Q: Monochromatic light is shown through a diffraction grating that has 500 lines/ mm. After passing…

A: Distance between screen and grating = D = 0.75 m Grating contstant = d = 1/ 500 mm = 2× 10-6 m For,.…

Q: A thin film of oil (n = 1.25) is located on smooth wet pavement, creating a system composed of the…

A: Given information: The refractive index of the oil ηoil=1.25 The refractive index of the water…

Q: A soap bubble (n =1.33) is floating in air. If the thickness of the bubble wall is 115 nm, what is…

A: Given :  n = 1.33 t = 115 nm = 115 × 10-9 m

Q: A glass lens (n = 1.52) is coated with a thin film of transparent substance that has an index of…

A:

Q: A film of soapy water (n = 1.33) on top of a plastic cutting board has a thickness of 230 nm. Part…

A:

Q: White light is incident at near normal on a thin film of thickness 542 nm and index of refraction n…

A:

Q: A broad beam of light of wavelength 527 nm is sent directly downward through the glass plate (n =…

A: GivenA broad beam of light of wavelength 527 nm is sent directly downward through the glass plate…

Q: A perfectly flat piece of glass (n = 1.50) is placed over a perfectly flat piece of black plastic (n…

A: Given that : The refractive index of the glass n1=1.5 The refractive index of the glass n2=1.2 The…

Q: A student holds a laser that emits light of wavelength 632.8 nm. The laser beam passes through a…

A:

Q: White light hits the surface of a thin film (n = 1.6) perpendicularly. There is air on both sides of…

A:

Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.