Myopia or short sightedness is corrected by
A. Use of convex lens
B. Use of concave lens
C. Use of plain concave lens
D. Use of plain convex lens
Answer: Option B
A. Use of convex lens
B. Use of concave lens
C. Use of plain concave lens
D. Use of plain convex lens
Answer: Option B
Which one of the following is useful in the treatment of scurvy disease?
A. Mango
B. Papaya
C. Aonia
D. Ber
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