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

Which of the following is not correct for rods?
$(I)$. Twilight vision is the function of the rods
$(II)$. It is responsible for daylight vision sometimes
$(III)$. The rods contain a protein called rhodopsin
$(IV)$. Rods are photoreceptor cells
Choose the correct option

Suppose a person wears convex glasses for proper vision. Where do you think the image of the object is formed in his eyes when he is not using the glasses?

Our paired eyes are located in sockets of the skull called

Select the correct option for the blind spot.

Iodopsin is a light-sensitive pigment and is present in the