Question

Difference in myopia and hypermetropia
And difference b/w stars and constellations

Answer 1

myopia is a nearsightedness disorder and hypermetropia is a farsightedness disorder.

In a nutsell, Stars are Hot body of mostly hydrogen and helium gases. They give off heat and light.The Sun is an example of A Star, whereas Constellation,when seen from Earth, is a group of stars that forms a shapes or pattern.Ursa major is an example of constellation.

Answer 2

Myopia is near sightedness means the person can see near object but not the far object . This defect is solved by using bi-concave lens.

Hypermetropia is far sightedness means the person can see far object but not near object. This defect is solved by using bi-convex lens.