Read the following paragraph and answer the questions.
A number of optical devices and instruments have been designed and developed such as periscope, binoculars, microscopes and telescopes utilising the reflecting and refracting properties of mirrors, lenses and prisms. Most of them are in common use. Our knowledge about the formation of images by the mirrors and lenses is the basic requirement for understanding the working of these devices.
(i) Why the image formed at infinity is often considered most suitable for viewing. Explain
When the image is formed at infinity, we can see it with minimum strain in the ciliary muscles of the eye.