The vision of man is

The least distance of distinct vision of a man is 1m . What type of eye defect does he suffer from ?

+50 cm focal length bi-convex lens is recommended to correct the defect of vision of a man. Find the power of the lens.

Minimun distance for clear vision of any adult normal man-

If a colourblind woman marries a normal visioned man, their sons will be -

If a colourblind woman marries a normal visioned man. Their sons will be

If a colourblind woman marries a normal visioned man, their sons will be -

If a colourblind woman marries a normal visioned man. Their sons will be

If a colourblind woman marries a normal visioned man, their sons will be: