Question

the least distance of distinct vision for a child studying 7th class is​

Answer 1

The least distance of distinct vision is the minimum distance of an object to see clear and distinct image. It is 25 cm for a young adult with normal visions.

Answer 2

»For infants, the least distance of distinct vision is about 5 to 8 cm.

»As the person grows old, their culinary muscles responsible for adjusting the eye lens get weakened.

»As a result, the power of accommodation reduces and hence the least distance of distinct vision for old people (55years) generally increases.

Hope it helps...