Question

1.what is spectrum?

2.what is meant by power of accommodation of the eye?

3.A student has difficulty reading the blackboard while sitting in the last row. what could be the defect the child is suffering from? how can it be corrected?

hope you will answer​

Answer 1

1)Band of seven colour components of light is called spectrum.

2)The ability of the eye lens to adjust it's focal length in order to se near as well as distant object is called power of accommodation of the eye.

3) hypermetropia.......it is corrected by using convex lens..

hope u got all the answe

Answer 2

Answer:

Step-by-step explanation:

1)a band of colours, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength.

2)The process by which the ciliary muscles change the focal length of an eye lens to focus distant or near objects clearly on the retina is called the accommodation of the eye.

3) by wearing concave lens that has power