1) THE INTERACTING PARTICLE OF A MEDIUM IS CALLED AS a) Light beam b) Tyndall scattering c) Scatterer 2) BASED ON WHAT SCATTERING IS CLASSIFIED a) Atoms b) Gases present in the atmosphere c) Initial and final energy of the light beam  3) BASED ON WHICH PROPERTY OF SCATTERER THE DIFFERENT TYPE OF INELASTIC SCATTERING IS DIVIDED a) Properties of light b) Tyndall effect c) Nature and size of the scatterer d) Type of scattering 4) GIVE ANY CAUSES FOR MIE SCATTERING a) Air molecules b) Pollen c) Dust d) Clouds 5) IS RAYLEIGH SCATTERING DIRECTLY PROPORTIONAL TO THE THE FOURTH POWER OF ITS WAVELENGTH a) False b) True 6) The phenomenon of scattering of light by the colloidal particles is called a) Tyndall effect b) dispersion of light c) Atmospheric scattering d) Atmospheric refraction 7) One cannot see through fog because a) light is scattered by the droplets of fog. b) the refractive index of fog is infinity. c) Fog absorbs light 8) The blue colour of the sky is due to the fact that: a) Red light is preferentially scattered. b) blue is the natural colour of sky. c) blue light is preferentially scattered. 9) What will be the colour of sky if there is no atmosphere on the earth? a) Red b) Dark blue c) Black  d) White  10) Tyndall effect is due to a) Refraction of light b) Reflection of light c) Dispersion of light d) Scattering of light 11) WHICH LIGHT IS EASILY SCATTERED  a) Long wavelength light b) Short wavelength light c) Sunlight d) Coherent light 12) The danger signals are red in colour because it is a) strongly scattered by fog or smoke b) Least scattered by the fog or smoke c) Least absorbed by fog  d) Strongly absorbed by fog 13) Which colour is strongly scattered by the molecules of air and other fine particles? a) Green b) Red c) Blue d) Red and blue both

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