Question

Assertion:When all the three types of cones are stimulated equally, a mosaic of red, green and blue lights is produced.
Reason:cones are responsible for twilight or scotopic vision.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer 1

Correct Answer - D
In the human eye, there are three types of cones which posses, their own characteristic photopigments that respond to red, green and blue lights. The sensations of different colours are produced by various combination of these cones and their photopigments. when these cones are stimulated equally a sensation of white light is produced. The daylight photopic vision and colour vision are functions of the rods.