The blue-ringed octopus reveals the bright blue rings that give it its nameas a warning display. The rings have a stack of reflectin (a protein usedfor structural color in many cephalopods) plates with index of refractionn = 1.59 separated by cells with index n = 1.37. The plates have thickness 62 nm. What is the longest wavelength, in air, of light that will give constructiveinterference from opposite sides of the reflecting plates?

Q: If the pupil of your eye is 4.0 mm in diameter when reading a page held 25 cm from your eye, what is…

A: The diameter of the eye d=4 mm=4×10-3m The distance between the dots and eye r=25 cm =0.25 m The…

Q: Light enters from air into glass (dark blue) with an index of refraction of ng = 1.774 , which is…

A: Critical angle is that angle of incidence for which the angle of refraction is 90 degrees, i.e total…

Q: A film is coated on the surface of a lens to maximize transmission at A = 440 nm. If it has index of…

A: Wavelength = 440 nm refractive index of film = 1.7 The thickness of the film = t

Q: a glass microscope lens having an index of reflection 1.45 is to be coated with magnesium fluoride…

A: Determine the wavelength of the light in the film as follows. λfilm=λnfilm=550 nm1.46=376.71 nm

Q: The light from a ruby laser has a wavelength of 694.3 nm in air. As the light travels from air into…

A:

Q: Two waves of light in air, of wavelength 600.0 nm, are initially in phase. They then travel through…

A: Let λ be the wavelength. Both the waves have to travel L2 distance as well as L1-L2.

Q: A light is incident normally on a thin (n = 1.33) suspended in the air. What is the minimum…

A: Given data as per questionN=1.55λ  = 560 nm

Q: If polarization in reflection is computed, at what angle will light from the source travelling in…

A: Given, Refractive indices of air and water:

Q: At what angle will light reflected from zircon (n 1.923) (to air) be completely polarized?

A:

Q: A beam of light consists of two wavelengths, 590.159 nm and 590.220 nm, that are to be resolved with…

A: The expression for resolving power R is,

Q: What is Brewster’s angle for light traveling in water that isreflected from crown glass?

A: Given:  refractive index of crown glass, n' = 1.52  refractive index of water, n'' = 1.33

Q: Two beams of light start together and then hit a slab of two different kinds of material. This will…

A: In the given question we have to find the difference in time required to travel the two slabs.

Q: A narrow beam of light containing red (660 nm) and blue (470 nm) wavelengths travels from air…

A:

Q: Consider a plane wave that is a superposition of two independent orthogonal plane waves that can be…

A:

Q: In the figure, light is incident at angle 6, = 41.0° on a boundary between two transparent…

A:

Q: A 130 nm130 nm thick anti‑reflective film, with an index of refraction of 1.37,1.37, is placed on…

A:

Q: Light of wavelength 700.0 nm is sent along a route of length 2000 nm.The route is then filled with a…

A: The length of a route,

Q: Light of wavelength l is used in a Michelson interferometer.Let x be the position of the movable…

A:

Q: In the figure, an isotropic point source of light S is positioned at distance d from a viewing…

A: The expression to determine the intensity,

Q: A Fabry-Perot interferometer is used to study a wavelength doublet with A2-d1 = 0.00428 nm at a…

A: Interference is the phenomenon in which two light rays interfere in order to form an interference…

Q: We consider a Newton's rings experiment. It consists of a plano-convex glass lens of index of…

A:

Q: A thin sheet of transparent material has an index of refraction of 1.40 and is 15.0 µm thick. When…

A: Four fringe shifts will occur when the optical path in one arm of a Michelson’s interferometer…

Q: A beam of laser light with wavelength 612 nm is directedthrough a slab of glass having index of…

A:

Q: hin glass of refractive index nG = 1.50 onto a boundary with water of refactive index nW = 1.33.…

A: We know that snell's law is given as  n1sinθ1= n2sinθ2 where n1 and n2 are the refractive indexes…

Q: Components of some computers communicate with each other through optical fibers having an index of…

A: Refractive index, n=1.55 Distance covered, d=0.2m Let the time required be t.

Q: A Michelson interferometer is adjusted to give a fringe pattern of concentric circles when…

A: We know, ∆m=2∆dλ∆d=λ2∆m

Q: A light is incident normally on a thin (n = 1.33) suspended in the air. What is the second minimum…

A: The combined effect of two or more waves intersecting at a point, is know as interference. It can…

Q: A light beam strikes a piece of glass with an incident angle of 45.00∘. The beam contains two…

A: Ans:- Image-1

Q: The indices of refraction for orange (610 nm) and blue (470 nm) light respectively in crown glass…

A:

Q: The index of refraction for orange (610 nm) and green (550 nm) light respectively in crown glass is…

A: Given data The index of refraction for the orange in the crown glass is no = 1.514 The index of…

Q: A light beam strikes a piece of glass at a 65.00° incidentangle. The beam contains two wavelengths,…

A: Concept Use Snell’s law to find the angle of refractions for the two wavelengths. Here, Өi is the…

Q: Interference effects are produced at point P on a screen as a result of direct rays from a 500-nm…

A:

Q: The light from a krypton laser has a wavelength of 647.1 nm in air. As the light travels from air…

A:

Q: The indices of refraction of the core and cladding of an optical fiber are 1.5 and 1.40,…

A: If the reflective index of core and cladding is known then length between two successive reflections…

Q: A multi-mode fiber optic has a core index of n = 1.492 and a cladding index of 1.489. The diameter…

A:

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.