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1. The wavelength of the red light from a helium-neon laser is 633 nm in air but 474 nm in the aqueous humor inside your eyeball. Calculate the index of refraction of the aqueous humor and the speed and frequency of the light in it

2. A ray of light is incident on a plane surface separating two sheets of glass with refractive indexes 1.70 and 1.58. the angle of incidence is 62.00, and the ray originates in the glass with n = 1.70. compute the angle of refraction

3. An object OO' is 25 cm from a concave spherical mirror of radius 80 cm. Determine the position and relative size of its image II' by (a) construction and (b) computation

4. Where should an object be placed, with reference to a concave spherical mirror of radius 180 cm, to form a real image having half its linear dimensions?

5. What kind of spherical mirror must be used, and what must be its radius, in order to give an erect one-fifth as large as an object placed 15 cm in front of it?