The highest refractive index is of :
(a) Glass (b) Water
(c) Diamond (d) Ruby.
(c) Diamond As the speed of light in diamond is the least, diamond has the highest refractive index.
Question 3 Find out, from the table, the medium having highest optical density. Also, find the medium with lowest optical density. Material mediumRefractive indexMaterial mediumRefractive indexAir1.0003Canada Balsam1.53Ice1.31−−Water1.33Rock salt1.54Alcohol1.36−−Kerosene1.44Carbon disulphide1.63Fused quartz1.46Dense flint glass1.65Turpentine oil1.47Ruby1.71Benzene1.50Sapphire1.77Crown glass1.52Diamond2.42
Question 24 Refractive index of diamond with respect to glass is 1.6 and absolute refractive index of glass is 1.5. Find out the absolute refractive index of a diamond.
A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incidence is:
When a ray of light from air enters a denser medium, it :
(a) bends away from the normal
(b) bends towards the normal
(c) goes undeviated
(d) is reflected back.