Question

(a) What happens to the size of pupil of our eye (i) in dim light (ii) in bright light?
(b) Name the cells on the retina of an eye which are sensitive to (i) bright light (ii) dim light (iii) sensation of colour.

Answer 1

Answer:

pupil means a dot in which looks tukur tukur

Answer 2

Rod and Cone Cells handles Intensity of Light

Explanation:

(a) (i) In dim light, pupil becomes large - to get more Light

     (ii) in bright light, pupil becomes small - to allow less light

(b) (i) Cones  (Cone Shaped Cells) - Bright light

    (ii) Rods  (Rod Shaped Cells) - Dim Light

    (iii) Cones (Cones) -  Sensation of Colour