Given the following scene on the stage Spotlight #1 1 meter diameter Spotlight #2 2 meters diameter Both spotlights SPOTLIGHT#1 and SPOTLIGHT#2 are place at 20 meters from the stage. You want to produce a circle of light of 1meter diameter with the SPOTLIGHT#1and a circle of light of 2 meters diameter with the SPOTLIGHT#2

Q: A Cassegrain telescope is a reflecting telescope that uses two mirrors, the secondary mirror…

A: In a Cassegrain telescope, the light first hits the primary mirror and then is reflected to the…

Q: Calculate the index of refraction for a piece of glass that is  3.5 cm thick if the ray inside the…

A: The angle of incidence i = 49°The angle of refraction r = 25.4°If the index of refraction for the…

Q: When the volume of an illuminated spherical object is doubled, the luminous flux is quadrupled. Truo

A: Ans is False

Q: Why is Light, Reflection, Refraction, Critical Angle important to our everyday life

A: Glass is a perfect everyday example of light refraction. Looking through a glass jar will make an…

Q: In Figure below, the point where the reflected rays converge is called th R C F/

A: In the given figure the incident light rays, that is light coming from the source is parallel to the…

Q: Choose the correct ray from those shown in the image below.             A     B…

A: When a light ray strike at the pole (centre) of a spherical mirror at some angle , then it reflect…

Q: Stare intently for at least a half minute at an American flag. Then turn your gaze to a white wall.…

A: The concept of optical illusion is being applicable to resolve the given condition. Optical illusion…

Q: What is the difference between the effects on parallel rays from a ray box when using convex lenses…

A:

Q: Which of the following is the refracted ray?       A     B     C     D     E     none…

A: When  incident light ray passes from one medium to another light get refracted  from it initial…

Q: In the chromatic aberration of the lens, the focus of the blue color is closer to the focus of the…

A: lens will not focus different color in exactly the same place because the focal length depends on…

Q: What is the critical angle (deg) for light moving from a clear material (n=1.65) into air?

A: The critical angle is given by θcrit = sin-1nrni , where nr = refraction index of the refractive…

Q: Calculate the speed of light in a medium, whose critical angle is 30°.

A:

Q: How will light diffract from the aperture below?

A: The bending of waves from an obstacle’s corner or through an opening (or aperture) and forms the…

Q: A ray of light incident on the surface of the flint glass at an angle of 50° with the normal.…

A:

Q: Compute the focal ratio (stated as "f/xxx"), the plate scale (in arc seconds/mm), and the linear…

A: Given, diameter,d=2.08mfocal length,f=47.70mAngle,θ=0.200 We have to calculate the focal ratio, We…

Q: The critical angle for a certain liquid-air surface is 31.6°. What is the index of refraction of the…

A: Given        critical angle = 31.60

Q: The light beam in the figure below strikes surface 2 at the critical angle. Determine the angle of…

A:

Q: Please fill in the blanks: As light travels from a more dense substance into a less dense substance.…

A: According to the law of reflection that the angle of reflection equals the angle of incidence.…

Q: Which of the following is the refracted ray? A B C D E none of the above

A: As the given lens is thinner at edges and thicker at middle , it is a convex lens .

Q: Explain the bright region under the main rainbow and the dark region between the main and the…

A:

Q: 6. What is the index of refraction of a liquid if the angle of incidence in air is 35° and the angle…

A: Dear student, Since you posted multiple questions, we will solve only first question and for the…

Q: 45 40 35 30 25 20 15 10 10 20 30 40 50 60 70 80 90 Angle in air (*) Using Figure 9.34, discuss how…

A: The refractive index of the glass is μg=1.5 The refractive index of the air is μa=1 According to…

Q: If a light ray has a reflected angle of 45 degrees the angle of incidence must be type your answer.…

A: Given data The angle of reflection is given as θi = 45 degrees.

Q: When standing at the edge of a pool light from the sun refracts when it enters the water. Assuming…

A: Refractive index of air (n) = 1 Refractive index of water (nw) = 1.33 Angle of incidence of light…

Q: What is the relationship between the angle of incidence and the angle of refraction when light…

A: Light is a type of energy that allows humans to see. Light comes from a source and bounces off…

Q: Stare intently at an American flag. Then turn your view to a white area on a wall. What colors do…

A: Originally, the colors of American flag are red, white and blue.

Q: What is the index of refraction of this prism? 52.2⁰ 60° 60° 52.2⁰ 60°

A: Given angle of incident = i = 52.2° angle of emergent = e = 52.2° Angle of prism = A = 60° We have…

Q: 1. When light passes from air to water (refractive index 1.33), its wavelength decreases to times…

A: The light ray enters from the air to the water medium. The refractive index of the water is given as…

Q: A layer of water of reflected index 4/3 is on top of a layer of glass of refracted index 3/2. A ray…

A:

Q: What is the total angle between the incident ray and the reflected ray if the angle of incidence is…

A: Angle of incidence: i = 40 degree

Q: Which of the following is the reflected ray for ray 2?       a     b     c     d

A: When light passes through focus became parallel to principal axis

Q: alam satu bongkan kaca. Sudut genting kaca itu ialah 42°. Diagram 9 shows a light ray, P directed…

A: Bending of light ray is called refraction

Q: Standing 64.3 m in front of the primary mirror of the Thirty Meter Telescope (TMT), you see a real,…

A: object distance (do) = 64.3 m Image distance (di) = do - 8 m

Q: Which of the light rays in the figure is drawn incorrectly? a b- C d e d Ob C a a e C

A:

Q: Why it is easier to read articles on a newspaper than on a glossy magazine? Please pick ONE from the…

A: It is the 2nd option, i.e. "Because the incident rays of light on a newspaper reflect in only one…

Q: what is the reason that at some angle of incidence, the incident ray will not be refracted by the…

A:

Q: The figure below shows a monochromatic beam of light striking the right-hand face of a right-angle…

A: Given Data : The angle of the refracted ray with the direction of the incident ray is given as…