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clear
//Given
v=-80.0                      //cm

//Calculation
f=v
P=100/f

//Result
printf("\n (a) Power of the lens is %0.3f  D", P)
printf("\n (b) No the corrective lens is concave and it reduces the size of the image. Because it bring the object at the far point of the eye")
printf("\n (c) The myopic person may have a normal near point. He must keep the book at a distance greater than 25 cm.")