A laser beam is incident at 50° on the surface of a material. The refracted ray is observed to be transmitted at 30°. What is the refractive index of the material?
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A laser beam is incident at 50° on the surface of a material. The
refracted ray is observed to be transmitted at 30°. What is the refractive
index of the material?
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- A point source of light is submerged 2.7 m below the surface of a lake and emits rays in all directions. On the surface of the lake, directly above the source, the area illuminated is a circle. What is the maximum radius that this circle could have? Take the refraction index of water to be 1.333. Number IN UnitsA ray of light travels from a liquid-to-flexi glass interface at an angle of 45.0°. Indices of refraction for the flexi glass and liquid are, respectively, 1.3 and 1.5. What is the angle of refraction for the ray moving through the liquid?A ray of light travels with a speed of 2×10^8m/s in a medium X and if its speed is halved in another medium Y .calculate the refractive index of medium X to Y and Y to X?
- Three sheets of plastic have unknown indices of refraction. Sheet 1 is placed on top of sheet 2, and a laser beam is directed onto the sheets from above so that it strikes the interface at an angle of 26.6deg with the normal. The refracted beam in sheet 2 makes an angle of 31.4deg with the normal. The experiment is repeated with sheet 3 on top of sheet 2 and, with the same angle of incidence, the refracted beam makes an angle of 36.8deg with the normal. If the experiment is repeated again with sheet 1 on top of sheet 3, what is the expected angle of refraction in sheet 3? Assume the same angle of incidence.A laser beam with a total power of 22 watts is incident at a normal angle of incidence on a Lambertian surface. How much power reaches a detector with an area of 0.1 cm2 at an angle of 25 degrees located at a distance of 40 cm from where the beam strikes the surface? Please check closest answer. 0.525 mW 0.397 mW 0.247 mW 0.421 mWA ray of light crosses the boundary between some substance with n = 1.54 and air, going from the substance into air. If the angle of incidence is 29◦ what is the angle of refraction? Calculate to 1decimal.
- A ray of light consisting of blue light (wavelength 480 nm) and red light (wavelength 670 nm) is incident on a thick piece of glass at 80°. What is the angular separation between the refracted red and refracted blue beams while they are in the glass? (The respective indices of refraction for the blue light and the red light are 1.4636 and 1.4561.) 0.27° 0.33° 0.36° 0.46° 0.54°A ray of light is incident on an air/water interface. The ray makes an angle of θ1 = 29 degrees with respect to the normal of the surface. The index of the air is n1 = 1 while water is n2 = 1.33. Write an expression for the reflection angle ψ, with respect to the surface.Light is incident from one medium with an index of refraction of 2.31 at an angle of 27.14 degrees with respect to the normal to the surface. The light then passes into another medium with a refractive index 1.35.With what angle is the light refracted with respect to the surface normal?