What happens to the image distance in the eye when we increase the distance of an object from the eye?

Can displacement be grater than distance travelled by an object?

The focal lenghts of objectives and eyepiece of a telescope are 200cm and 10 cm respectively. Is is used to get an image of the Sun on a screen placed 40cm behind the eyepiece. The diameter of the image is 6cm. What is the diameter of the Sun? Give the distance from earth to the Sun is 1.5xx10^(11)m .

Find the power of the eye lens of the normal eye when it is focussed at its near point. Assume the distance of the retina from the eye lens to be 2.5 cm.

An object is placed at a distance of 25 cm from a convex mirror. A plane mirror is placed such that the two images formed by the two mirrors are in the same plane. The distance of the plane mirror from the object at this position is 20 cm. Calculate the radius of the convex mirror.

What happens to the force between two objects, if the masses of both objects are doubled?

What happens to the force between two objects, if the distance between the objects is doubled and tripled?