Can you please explain how to solve these?

1)

TFTEE_I'..'_'IT'W?.Y?FE'? eye is corrected by placing a converging lens in front of the eye. The lens will create a virtual image that is located at the near point (the closest an object can be and still be in focus) of the viewer when the object is held at a comfortable distance, usually taken to be 25.0 cm. If a person has a near point of 35.5 cm, what power reading glasses should be prescribed to treat this hyperopia? Assume that the distance from the eye to the lens is negligible. A physicist's right eye is presbyopic (i.e., farsighted). This eye can see clearly only beyond a distance of 69 cm, which makes it difcult for the physicist to read books and journals. Find the focal length and power of a lens that will correct this presbyopia for a reading distance of 25 cm, when worn 2 cm in front of the eye. Is this a converging or a diverging lens? 0 converging O diverging