A nearly perfect paraboloidal mirror has a residual RMS surface error of /40, where A is the wavelength of light. The mirror focuses light from a distant star on axis. What is the resulting wavefront error after the reflection from the mirror if one neglects the effect of atmospheric seeing? Find Strehl ratio for the mirror and the amount of energy concentrated in the central maximum of the star image.

Q: The speed of sound is 500 m/s in air. Sound travels 1500 m/s in water. Sound travels from air to…

A: Speed of sound in air Speed of sound in water

Q: The refractive indices of glass and diamond with respect to air 1.5 and 2.4 respectively. The…

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Q: Often in optics scientists take advantage of effects that require very high intensity light. To get…

A:

Q: A ray of white light traveling through air enters a triangular prism that has an index of refraction…

A: It is given that, μr=1.315μv=1.345A=72oθi=63o

Q: )If the refractive index of glass is 1.55 and the refractive index of air is 1.0003, what is the…

A: Critical angle for total internal reflection is defined as, when the incident light ray travelling…

Q: Show that if Two mirrors with a radius of curvature of 0.7 m, separated by a distance of 0.7 m leads…

A: Radius of curvature , R1 = R2 = 0.7 m Distance , d = 0.7 m To find = Check for stability

Q: A good model of the index of refraction n of visible light in a certain material is n = no(1+af²/f),…

A:

Q: b) Compute the numerical value of reflection and the transmission coefficient for normal incidence…

A: Given question is related to reflection of light. According to Given question answer is. reflection…

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

A: Given information: The distance of a point source from the screen is, d The distance of the plane…

Q: gure, a polnt source S of sound waves lies near a reflecting wall AB. A sound detector D intercepts…

A:

Q: The refractive index of the material of a prism is Vē and the angle of the prism is 30°. One of the…

A:

Q: A multimode graded index fiber has an acceptance angle in air of 8º. Estimate the relative…

A: We are given,Calculate relative refractive index between core axis and cladding

Q: A ray of white light traveling through air enters a triangular prism that has an index of refraction…

A: Given:Index of refraction of triangular prism for red light, μr = 1.313Index of refraction of…

Q: Light reflected from the front surface of a dense flint windowpane (n = 1.655) has an intensity I1.…

A: Given data as per question n = 1.655

Q: he glass core of an optical fiber has an index of refraction of 1.60. The index of refraction of the…

A: Given data, nD= 1.60 (refractive index of core) nR= 1.48 (refractive index of cladding) r= 90 o…

Q: Often in optics scientists take advantage of effects that require very high intensity light. To get…

A: (a) The expression for intensity is  I=PA where P is the power, I is the intensity and A is the area…

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: If the optical power entering an optical fiber is I=1000 mW Its length is z = 100 km The loss is…

A:

Q: Astronauts placed a mirror on the surface of the Moon to be used for optical measurements of the…

A: Assume a visible light of wavelength λ (~ 450 nm).

Q: A light ray with a wavelength of 589 nanometers (produced by a sodium lamp) traveling through air…

A:

Q: A light ray is incident from air into glass (ng = 1.52) then onto water (nw 1.33). The wavelength of…

A: The refractive index of glass is given by  ng =λaλgnwg=λgλw

Q: You may have noticed that the eyes of cats appear to glow green in low light. This effect is due to…

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Q: Consider a fiber like the one sketched below. Take the index of refraction of the core to be n₁ =…

A: Given,           The index of refraction of the core,           The  index of refraction of the…

Q: X-rays of wavelength of 1.54 angstroms are used to calculate the spacing of (200) plan in platinum.…

A: nλ=2dsinθ11.54 A0=2dsin22.4°d=2.02 A°

Q: An optical coating with an index of refraction of 1.23 is applied to glass with an index of…

A: Given that: ncoating=1.23nglass=1.50Thickness, t=184 nm=184×10-9 m

Q: A step index fibre has core and cladding refractive indices 1.466 and 1.460 respectively. If the…

A: Given, Refractive index of core, n1=1.466 Refractive index of cladding, n2=1.460  Wavelength of…

Q: Light reflected from the front surface of a zircon windowpane (n = 1.923) has an intensity I₁. Light…

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Q: a) Calculate the reflectance of a quarter-wave anti-reflecting film of magnesium fluoride (n = 1.35)…

A: Light is shined on a sample and the light reflected from it is measured to determine its…

Q: Lunar astronauts placed a reflector on the Moon’s surface, from which a laser beam is periodically…

A: Accuracy in time,

Q: The index of refraction of a certain glass is (1.44x10^0). What is the critical angle for total…

A: