Short-sight defect could be corrected by a _____________ lens?
A. concave lens
B. convex lens
C. converging lens
D. none of these
ALSO CHECK: Long-sight defect could be corrected by using __________ lens?
Short-sight defect could be corrected by a _____________ lens?
A. concave lens
B. convex lens
C. converging lens
D. none of these
ALSO CHECK: Long-sight defect could be corrected by using __________ lens?