A ray of light in air is incident on an air- to-glass boundary at an angle of 30° with the normal. If the index of refraction of the glass is 1.65, what is the angle of the refracted ray within the glass with respect to the normal? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 56° 2. 46° 3. 30° 4. 18°
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A ray of light in air is incident on an air-to-glass boundary at an angle of 30° with the normal. If the index of refraction of the glass is 1.65, what.
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A ray of light in air is incident on an air-to-glass boundary at an angle of 30° with the normal. If the index of refraction of the glass is 1.65, what is the angle of the refracted ray within the glass with respect to the normal?
A ray of light in air is incident on an air-to-glass boundary at an angle of 30° with the normal. If the index of refraction of the glass is 1.65, what is the angle of the ray reflected off the glass surface with respect to the normal?
If the critical angle for internal reflection inside a certain transparent material is found to be 48°, what is the index of refraction of the material? (Air is outside the material).
Helium-neon laser light has a wavelength in air of 632.8 nm. What is the energy of a single photon in the beam? (h = 6.626 x 10-34 J-s and c = 3 x 108 m/s).
A certain kind of glass has an index of refraction of 1.65 for blue light and an index of refraction of 1.61 for red light. If a beam of white light (containing all colors) is incident at an angle of 30°, what is the angle between the red and blue light inside the glass?
A beam of light is incident upon a flat piece of glass (n = 1.50) at an angle of incidence of 30°. Part of the beam is transmitted and part is reflected. What is the angle between the reflected and transmitted rays?
An optical fiber is made of clear plastic with index of refraction n = 1.50. For what angles with the surface will light remain within the plastic "guide"?
A small underwater pool light is 1m below the surface of a swimming pool. What is the radius of the circle of light on the surface, from which light emerges from the water? (nwater = 1.333).
4. Earth was on the other side of the sun from Jupiter.
An oil film floats on a water surface. The indices of refraction for water and oil, respectively, are 1.333 and 1.466. If a ray of light is incident on the air-to-oil surface at an angle of 37° with the normal, what is the angle of the refracted ray at the oil-to-water surface?
A ray of light is incident on the mid-point of a glass prism surface at an angle of 25° with the normal. For the glass, n = 1.55, and the prism apex angle is 30°. What is the angle of incidence at the glass-to-air surface on the side opposite where the ray entered the prism?
A ray of light is incident on the mid-point of a glass prism surface at an angle of 25° with the normal. For the glass, n = 1.55, and the prism apex angle is 30°. What is the angle of refraction as the ray enters the air on the far side of the prism?
An oil film floats on a water surface. The indices of refraction for water and oil, respectively, are 1.333 and 1.466. If a ray of light is incident on the air-to-oil surface at an angle of 37° with the normal, what is the incident angle at the oil-to-water surface?
A light ray passes from air through a thin plastic slab (n = 1.3) with parallel sides. If the incident ray in air makes an angle of 45° with the normal, what is the angle of refraction for the final ray as it emerges from the opposite side of the plastic into the air?
In an experiment to measure the speed of light using the notched-wheel apparatus, the distance between wheel and mirror is 24 km and the wheel has a total of 1000 evenly spaced notches. What minimum rotational speed must the wheel have to allow the reflected pulse to pass through an open notch on the opposite side of the wheel from where the pulse originated? (c = 3.00 x 108 m/s)
A fish is 1.2 m beneath the surface of a still pond of water. At what angle must the fish look toward the surface (measured with respect to the normal to the surface) in order to see a fisherman sitting on a distant bank? (for water, n = 1.333)
A ray of light is incident on a liquid-to-glass interface at an angle of 35°. Indices of refraction for the liquid and glass are, respectively, 1.63 and 1.52. What is the angle of refraction for the ray moving through the glass?
A ray of white light, incident upon a glass prism, is dispersed into its various color components. Which one of the following colors experiences the greatest angle of deviation?
A ray of light travels across a liquid-to-glass interface. If the indices of refraction for the liquid and glass are, respectively, 1.75 and 1.52, what is the critical angle at this interface?
A ray of light travels from a glass-to-liquid interface at an angle of 35°. Indices of refraction for the glass and liquid are, respectively, 1.52 and 1.63. What is the angle of refraction for the ray moving through the liquid?
If light from a 560 nm monochromatic source in air is incident upon the surface of fused quartz (n = 1.56) at an angle of 60°, what is the wavelength of the ray refracted within the quartz?
A monochromatic light source emits a wavelength of 490 nm in air. When passing through a liquid, the wavelength reduces to 429 nm. What is the liquid's index of refraction?
Fused quartz has an index of refraction of 1.56 for light from a 560 nm source. What is the speed of light for this wavelength within the quartz? (c = 3.00 x 108 m/s)
If the wavelength of a monochromatic source is 490 nm in vacuum, what is the wavelength from the same source when it passes through a liquid where the velocity of light is 2.4 x 108 m/s? (c = 3 x 108 m/s)
Light from a 560 nm monochromatic source is incident upon the surface of fused quartz (n = 1.56) at an angle of 60°. What is the angle of reflection from the surface?
According to Planck's formula, tripling the frequency of the radiation from a monochromatic source will change the energy content of the individually radiated photons by what factor?
Which one of the following scientists made a successful estimate of the speed of light by taking into account the interval of time delay for one of Jupiter's moons?
A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.49). If the velocity of the beam before it enters the plastic is 3 x 108 m/s, what is its velocity after emerging from the block?
As the angle of incidence is increased for a ray incident on a reflecting surface, the angle between the incident and reflected rays ultimately approaches what value?
4. speed in glass equals square root of that in air
A beam of light in air is incident at an angle of 35° to the surface of a rectangular block of clear plastic (n = 1.49). The light beam first passes through the block and re-emerges from the opposite side into air at what angle to the normal to that surface?
Carbon tetrachloride (n = 1.46) is poured into a container made of crown glass (n = 1.52). If the light ray in glass incident on the glass-to-liquid boundary makes an angle of 30° with the normal, what is the angle of the corresponding refracted ray with respect to the normal?
A monochromatic beam of light in air has a wavelength of 589 nm in air. It passes through glass (n = 1.52) and then through carbon disulfide (n = 1.63). What is its wavelength in the carbon disulfide?
A light ray in air is incident on an air to glass boundary at an angle of 45° and is refracted in the glass of 30° with the normal. What is the index of refraction of the glass?
Carbon disulfide (n = 1.63) is poured into a container made of crown glass (n = 1.52). What is the critical angle for internal reflection of a ray in the liquid when it is incident on the liquid-to-glass surface?