The focal length of normal eye lens is about

The change of focal length of an eye lens is caused by action of the

Power of a lens of focal length 25 cm is

If the lens power of glass is +2 dioptre, its focal length will be-

If the focal length of a magnifying glass is 2.5 cm, it can magnify an object :

Which type of image of an object is formed by eye lens of the retina?