For a healthy vision what is the distance to the near point ?

a) In the number line, what is the distance between the points representing the numbers 3 and -5 ? b) Which number represents the midpoint of these points?

What if the distance between the bodies is doubled?

The locus of the point which moves, so that its distance from the fixed point (-2, 3) equals its distance from the line x + 6 = 0 , is

Will an image be formed on the retina when the object is at the near point ? Will it be possible to see a clear image ?

A circle is drawn with (5,3) as centre. (5,6) is a point on the circle.What is the distance from the centre of the circle to the x-axis?.

What are the points on the y-axis whose distance from the line x/3 + y/4= 1 is 4 units.

A(5,3)' is a point on a line parallel to 'x' axis. a) Write the coordinates of any other point on the same line. b) What is the distance of that (you have written) point from A?