Light reflected from the front surface of a densest flint windowpane (n = 1890) has an intensity I1. Light entering the glass undergoes multiple reflections. Let I2 be the intensity of light reflected after only one reflection at the back surface of the glass. Find the ratio I2/I1. Assume normal incidence.

A beam of light moves through a slab of glass as shown in the figure. The index of refraction of the glass is ng = 1.5. The index of refraction of air is na = 1. The incident angle of the light is \theta i = 44\deg . Part (a)  If the refraction angle of the light at the upper surface of the slab is \theta 1, express sin\theta 1 in terms of \theta i, na, and ng. Part (b)  The incident angle of the light on the lower surface of the slab is \theta 2. What is the relation between \theta 1 and \theta 2?  Part (c)  The refraction angle of the light on the lower surface of the slab is \theta f. Express sin(\theta f) in terms of \theta 2, na, and ng.

A light beam traveling in the air makes an angle θi with respect to an air-plastic interface. After it enters a rectangular block of plastic, it travels at an angle of θr with respect to the normal. Write an equation for the index of refraction of the plastic in terms of the given variables. Assume that the index of refraction for air is 1.001.00, and apply this value to your equation.

A 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.

White light enters flint glass from air (n₁ = 1). The angle of incidence is 8, = 63 degrees. Due to dispersion in the glass, the index of refraction for red light is 1.662, while the index for violet light is 1.698. Due to this difference, the violet and red parts of white light are refracted by different amounts. What is the difference in refraction angle (AO) between violet and red fin this situation? A0 = degrees n₁ n₂ refracted rays

Light reflected from the front surface of a zircon windowpane (n = 1.923) has an intensity I₁. Light entering the glass undergoes multiple reflections. Let I2 be the intensity of light reflected after only one reflection at the back surface of the glass. Find the ratio I2/11. Assume normal incidence.

A beam of light traveling in air strikes a slab of transparent material. The incident beam makes an angle of 60° with the normal, and the refracted beam make an angle of 50° with the normal. What is the speed of light in the transparent material? (c = 3.0 × 108 m/s) Provide the answer: x 108 m/s

The index of refraction of a certain glass is (1.44x10^0). What is the critical angle for total internal reflection at the glass-air interface? Express your result in degrees with three significant figures.

ray of light strikes a flat block of glass at an incidence angle of ?1 = 38.6°. The glass is 2.00 cm thick and has an index of refraction that equals ng = 1.52.   a.)What is the angle of refraction, ?2, that describes the light ray after it enters the glass from above? (Enter your answer in degrees to at least 2 decimal places.)   b.) With what angle of incidence, ?3, does the ray approach the interface at the bottom of the glass? (Enter your answer in degrees to at least 2 decimal places.)     c.) With what angle of refraction, ?4, does the ray emerge from the bottom of the glass? (Enter your answer in degrees to at least 1 decimal place.)     d.) The distance d separates the twice-bent ray from the path it would have taken without the glass in the way. What is this distance (in cm)?     e.) At what speed (in m/s) does the light travel within the glass?    f.) How many nanoseconds does the light take to pass through the glass along the angled path shown here?

The speed of light in a particular type of glass is 1.72 x 10^8 (10 to the eighth power) m/s. What is the index of refraction of the glass?