1) Part of the eye which controls the light entering is called a) iris b) Cornea c) Lens d) Retina 2) We can see a non-luminous object when light a) emitted by the object falls on the eye. b) is reflected from the object towards our eye. c) completely passes through the object. d) gets completely absorbed by the object. 3) How many images are obtained when the plane mirrors are arranged parallel to each other? a) A single image b) Two images c) Infinite no. of images d) Zero image 4) Splitting of white light into constituent colours a) dispersion b) deviation c) both d) none 5) Name the phenomenon in which left appears to be right and vice versa a) Regular reflection b) Irregular reflection c) lateral inversion d) None of these 6) Name the optical device used to see objects that are not along the line of sight a) Periscope b) Kaleidoscope c) Both d) None of these 7) how many images will be formed when two mirrors are placed parallel to each other a) Two b) Infinite c) One d) Four

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