The Human Eye and the Colorful World Objective Questions
31-The phenomenon of ___ of light by the colloidal particles gives rise to Tyndall effect
(A) Dispersion
(B) Reflection
(C) Refraction
(D) Scattering
32-Blue color of sky is due to ___ of light.
(A) Dispersion
(B) Reflection
(C) Refraction
(D) Scattering
33-It is observed that danger signal lights are red in color because red light is ___ scattered by fog or smoke
(A) least
(B) more
(C) not
(D) none of the above
34-The reddish appearance of the Sun at the sunrise or the sunset is due to ___ of light.
(A) Dispersion
(B) Reflection
(C) Refraction
(D) Scattering
ANSWERS:
31-(D), 32-(D), 33-(A), 34-(D)