Fire polishing of glass is due to……….

In which of the following processes,convection does not take place primarily? (a)Sea and land breeze (b)Boiling of water (c)Warming of glass of bulb due to filament (d)Heating air around a furnace.

Light obliquely travel from glass to air , critical angle of glass is 42^@ . Angle of incidence is 42^@ find its refracted angle ?

A ray of light undergoes refraction when it enters from air to glass. Critical angle for glass - liquid boundary is sin^1 (8/9). Determine the speed of light in liquid if speed of light in glass is 2x10^8 m/s .

The pitch of the siren of a fire engine increases as it approaches a boy standing at a bus stop.The phenomenon behind it, is due to ......

What is the Brewster angle for air to glass transition? (Refractive index of glass is 1.5).