A lens has power of +4.0D in air, and +1.73D in water (n=1.33).
What’s
the index of the lens?
A lens has power of +4.0D in air, and +1.73D in water (n=1.33). What’s the index...
Light that is traveling through water (index of refraction is n=1.33) strikes a glass surface (index of refraction n=1.50) at an incident angle of θi=48.1°. What is the the angle of refraction, θr, of the light in the glass? Light that is traveling through glass (index of refraction is n=1.50) strikes an air surface (index of refraction n=1.00) at an incident angle of θi=27.9°. What is the the angle of refraction, θr, of the light in the air? Water Glass
A light ray in air is incident on the surface of water (index = 1.33) at an angle of 60 degrees to the normal to the surface. What is the angle of the refracted ray in the water relative to the normal? refraction cannot occur 48 degrees 49 degrees 41 degrees 68 degrees
A crown glass lens (n = 1.52) has an optical power of 4.0 d in air. What is its power in benzene (n = 1.501)?
A crown glass lens (n = 1.52) has an optical power of 4.0 d in air. What is its power in benzene (n = 1.501)?
A certain thin lens is made of glass with refraction index ?lens=1.500. In air, where the index of refraction is 1.000, the lens has focal length ?0=15.5 cm. What is the focal length ? of the lens when immersed in water, where the index of refraction is 1.330?
A crown glass lens (n = 1.52) has an optical power of 4.0 d in air. What is its power in methyl alcohol (n = 1.329)?
6. The index of refraction of air is 1.0 and that of water is 1.33. You stand at the shore of a lake, spear-fishing for a type of fish you know likes to feed on the bottom of the lake, 1 m deep. You can see such a fish by looking from above down into the water at an angle below the horizontal of 40°. At what angle below the horizontal should you aim the spear? A refraction diagram will...
The index of refraction of water is nwater = 1.33. What is the speed of light in water? Answer: x108 m/s If light incident on water from air (index of refraction of air is nair = 1.00) at an incident angle of 32.0° what is the refracted angle for the light beam in water? Answer: 0
Sometimes a nonreflective coating is applied to a lens, such as a camera lens. The coating has an index of refraction between the index of air and the index of the lens. The coating cancels the reflections of one particular wavelength of the incident light. Usually, it cancels green-yellow light (λ 546.0 nm) in the middle of the visible spectrum. (a) Assuming the light is incident perpendicular to the lens surface, what is the minimum thickness of the coating in...
A typical human lens has an index of refraction of 1.430. The lens has a double convex shape, but its curvature can be varied by the ciliary muscles acting around its rim. At minimum power, the radius of the front of the lens is 10.0 mm, whereas that of the back is 6.00 mm. At maximum power, the radii are 6.50mm and 5.5mm, respectively. If the lens were in air: What would be the maximum power and associated focal length...