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: 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…

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Q: light enters from air to glass huving refractive index 1.50. What will be the speed of light in…

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Q: A film on a lens with an index of refraction of 1.5 is 1.0 ×× 10−7−7 m thick and is illuminated with…

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Q: If a = 27 cm, b = 10 cm, q = +5 nC, and Q = – 10 nC in the figure, what is the potential difference…

A: Solution:-Given thata=27 cm=0.27 m b=10 cm=0.1 mq=+5 nC =+5×10-9 CQ=-10 nC=-10×10-9 Ck=9×109 N.m2/C2

Q: light travels through a slab of glass of thickness 2.0cm. how much time is reqired for it to…

A: Here is the step-by-step explanationWe have:​Thickness of the glass slab, d=2.0cm=0.02mIndex of…

Q: An optical chopper is a device placed in the laser beam path to periodically obstruct the light. If…

A: In this question let us suppose the angle between subtended gap of 2 blades is ϕ Angular velocity…

Q: What is the index of refraction of the core of an optical fiber if the cladding has n= 1.30 and the…

A: Given data :             Refractive index of cladding, n2 = 1.30             Critical angle = 41.9°…

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: The index of refraction for violet light in silica flint glass is 1.66, and that for red light is…

A: Given:Refractive index for violet light is 1.66Refractive index for red light is 1.62Apex angle of…

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

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A: We can calculate the dielectric constant (r) by using a simplified capacitor model, where r is the…

Q: Light reflected from the front surface of a densest flint windowpane (n = 1890) has an intensity I1.…

A: Given The refractive index of the window pane n=1890. The intensity is I1. After the light is…

Q: The mass of a solid hemisphere is measured once with a digital balance whose resolution is 1 g. The…

A: The main value of the readings is taken as the average of all the values which are observed . And…

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

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Q: Consider the boundary system below. Assume that the upper material is benzene (n = 1.501) while the…

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Q: Suppose the glass paperweight in Figure26-67 has an index of refraction n = 1.38. (a) Find the value…

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Q: A glass optical fiber is used to transport a light ray across a long distance. The fiber has an…

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Q: What is the index of refraction for fluorite if light travels at a speed of 2.10 × 10⁸ m/s in…

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Q: Light traveling in air is normally incident on the hypotenuse face of a right prism that is composed…

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Q: Light reflected from the front surface of a densest flint windowpane (n = 1890) has an intensity I1.…

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Q: A laser light traveling in fiber optics glass with index of refraction of N=1.5 is amplified every…

A: Refractive index of fiber optic glass , N = 1.5 Distance = 150 km Speed of light in fiber = Speed of…

Q: A sound wave traveling in air (v = 340 m/s) is incidenton a surface of water at an angle of 5.0°.…

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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: D)To determine if the ray will be guided by the fiber with low loss, we need to check if the input…

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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: The index of refraction of water is 1.33.  If you (or a fish) were under calm water swimming in the…

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Q: A water break at the entrance to a harbor consists of a rockbarrier with a 50.0-m-wide opening.…

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Q: (a) A spectrograph contains one lens, a mirror and a reflection grating. In the visible waveband…

A: Given: The transmission coefficient is t=85%=85100=0.85. The absorption coefficient is…