A person looking at a person wearing a shirt with a pattern comprising vertical and horizontal lines is able to see the vertical lines more distinctly than the horizontal ones. What is this defect due to ? How is much a defect of vision corrected ?

A person looking at a person wearing a shirt with a pattern comprising vertical and hoziontal lines is able to see the vertical lines more distinclty than the horizontal ones. What is this defect due to ? How is such a defect of vision corrected?

A person looking at a net of crossed wires is able to see the vertical direction more distinctly than the horizontal wires. What is the defect due to? How is such defect of vision corrected?

A person looking at a mesh of crossed wires is able to see the vertical wires more distincly than the horizontal wires. Why ? How can it be corrected ?

A person is not able to see vertical wires clearly in a grid of wires. What is this defect and how it is corrected ?

A person cannot see the object beyond 3 m distinctly. Find focal length of the lens required to correct this defect of vision.

A person using spectacles having power +2.5m^(-1) can see the objects distinctly at a distance of 25 cm . What is the near point for the person ? What type of defect of vision does the eye have ?

State which of the following statements are true (T) and which false (F): Point has a size because we can see it as a thick dot on paper. By lines in geometry, we mean only straight lines. Two lines in a place always intersect in a point. Any plane through a vertical line is vertical. Any plane through a horizontal line is horizontal. There cannot be a horizontal line is a vertical plane. All lines in a horizontal plane are horizontal. Two lines in a plane always intersect in a point. If two lines intersect at a point P , then P is called the point of concurrence of the two lines. If two lines intersect at a point p , then p is called the point of intersection of the two lines. If A , B , C a n d D are collinear points D , P a n d Q are collinear, then points A , B , C , D , P a n d Q and always collinear. Two different lines can be drawn passing through two given points. Through a given point only one line can be drawn. Four points are collinear if any three of them lie on the same line. The maximum number of points of intersection of three lines in three. The minimum matching of the statements of column A and Column B .