A surface has an average roughness of (10 cm). If the surface is imaged by a radar system operating at a wavelength of (23 cm) with a depression angle of 45° degrees, would it be classed as a radar- smooth or a radar- rough surface?

Q: At what light bulb emits a total luminous flux of 1500 lumens, distributed uniformly over a…

A:

Q: If the spotlight with 5000 candelas at the center is aimed at a painting on the wall 5 ft from the…

A: Given data: The intensity of source is I=5000 candelas. The perpendicular distance is r=5 ft. The…

Q: A certain kind of glass has nblue = 1.650 for blue light and nred = 1.610 for red light. If a beam…

A:

Q: why are the interiors of optical instruments intentionally black?

A: The interiors of optical instruments are intentionally black to minimize the reflections. The black…

Q: The angle of minimum deviation for a glass with μ = √3 equals the refracting angle of the prism in…

A: The angle between two surfaces is known as refracting angle or angle of prism. Here, we calculate…

Q: Estimate the separation of two points on the Moon’s surface that can just be resolved by 200-in…

A: Distance of moon from the Earth, L = 3.84 x 108 m Diameter of the telescope, D = 200 in = 200 x 2.54…

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

A: Given data: The refractive index of the prism experienced by the red light is, μR=1.515 The…

Q: Determine the diameter of a paraboloidal reflector required to produce a beam of 15o width at 1.5…

A: Given Data: Beam width, θ=15°=15×π180 Frequency, ν=1.5 GHz=1.5×109 Hz Speed of em waves, c=3×108 m/s

Q: Assume that light of wavelength 6000Å is coming from a star. What is the limit of resolution of a…

A: It is given that,

Q: A photographic plate placed a distance of 5 cm from a weak point source is exposed for 3 s. If the…

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Q: A narrow beam of light is incident from air onto a glass surfacewith index of refraction 1.56. Find…

A: Given,The refractive index of air, n1 = 1.00The refractive index of glass, n2 = 1.56

Q: Divers swimming at 7 meters below the surface found that the light level was 83% that of the…

A: Given: Distance of the diver from the surface of the sea, x = 7m Intensity, Io = 83% Intensity, I =…

Q: The windshields on old automobiles were flat instead of curved. What is the displacement, as seen by…

A: Solution: Determine the angle of refraction using Snell's law: sinθ1sinθ2=n2n1 Here, n1 is incident…

Q: Calculate the contact angle θ for olive oil if capillaryaction raises it to a height of 7.07 cm in a…

A: Given: height, h = 7.07 cm  radius, r = 0.1 mm =0.01 cm  surface tension,T =  33 dyne / cm  density…

Q: The fraction of nonreflected radiation that is transmitted through a 5-mm thickness of a transparent…

A: In this problem, we are asked to calculate the fraction of non-reflected light transmitted through a…

Q: How are different defects of eyesights corrected in terms of physics?

A:

Q: How is a rainbow similar to the halo sometimes seen around the Moon on a frosty night? if you’re…

A:

Q: How resolving power of microscope can be increased?

A: Write the expression for the resolving power.

Q: When dispersing white light, the largest difference between the incidence and refracted angle will…

A: Dispersion of light is a phenomenon in which white light splits into its component colors.…

Q: Will you please answer the following that can be seen in the images?

A: Given:-           By using gauss law:                   ϕ E→.dA→ = εenclosedε0

Q: What type of wavefront will emerge from a (i) point source, and (ii) distant light source?

A: A wave front is defined as the locus of the surface of the waves which are in same phase.

Q: Why are wavelengths 0.5~2.5Å normally used for diffraction analysis?

A: Step1 - Here, we will understand the diffraction.               When the waves travelling in any…

Q: What does it mean if a micrograph is false colored?

A: We have to answer the meaning if a micrograph is false colored.

Q: When a light ray encounters a dense-rare boundary at an angle greater than the critical angle, then

A: When the ray travels from the denser medium to the rarer medium, at an angle more than the critical…

Q: State the Introduction of Refractive index of water? (must include define the refraction index, what…

A: Refractive index: Refractive index is the ratio of velocity of light in vacuum to the velocity of…

Q: In the same soil deposit, if the incident wave at the boundary is inclined at a 30° angle, determine…

A: Given:  Incident ray in the denser medium, the angle of incidence is 30 degree.

Q: Is the smallest angle of incidence at which all light striking the surface is totally internally…

A: Total internal reflection : When a ray of light moves from a denser medium to a rarer medium it…

Q: . Each 1.0 mm of a filter through which light passes reduces the intensity of the light by 12%. How…

A: Given: Each 1 mm of filter reduces the light by 12 % We want the intensity to be reduced by 20%

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

A: Snell's law is n1sinθ1=n2sinθ2…

Q: If a ray of light enters the prism hypotenuse-face at 0° incident angle, then the minimum index of…

A:

Q: core/cladding interface Calculate: The angle of refraction at the air/core interface, 0, critical…

A:

Q: Calculate the numerical aperture and maximum acceptance angle of a fiber having refractive indices…

A: Given data: Refractive index of core, n1=1.62 Refractive index of cladding, n2=1.52

Q: In terms of focal length, how far behind the camera lens is photosensitive surface located when very…

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Q: Calculate the numerical aperture of an optical fibre whose core and cladding are made of materials…

A:

Q: A body with large reflectivity is a poor emitter, Why?

A: According to Kirchhoff's law, a poor absorber of heat is a poor emitter. Hence, a body with large…

Q: If a point source with intensity of 200 candela is 10 ft. above a 2 ft2 surface, what is the…

A:

Q: The index of refraction of the blue material is greater than that of the outer medium True O False

A: Given: from the diagram. The refracted ray is bent toward the blue material.

Q: Unless specifically designed, all recessed incandescent luminaires must be provided with…

A: A recessed luminaires have all the electrical and optical components above the ceiling line. Certain…

Q: y 1 in. 4 in. х 4 in. -4 in.

A: