The focal length of the lens in the human eye is controlled by the:

Photosensitive compounds are formed of which substances?

Our paired eyes are located in sockets of the skull called

Which of the following are functions of the cone cells of the retina?
$1.$ Photopic vision
$2.$ Colour vision
$3.$ Scotopic vision

The retina is most sensitive at:

Given below are the two statements regarding photoreceptor cells of the human eye.
Statement $I$: The three types of cone cells have their own characteristic photopigments that respond to red,green,and blue lights.
Statement $II$: Sensation of white light is produced due to simultaneous equal stimulation of all three types of cone cells.
In the light of the above statements,choose the correct answer from the options given below: