A point object O moves from the principal axis of a converging lens in a direction OP. I is the image of O, will move initially in the direction

A point object moves along the principal axis of a convex lens of focal length f , such that its image also formed on the principal axis at a distance (4f)/(3) (at t=0 ) moves away from the lens with a uniform velocity alpha . Find the velocity of point source as a function of time t .

A point object moves along the principal axis of a convex lens of focal length f such that its real image, also formed on the principal axis at a distance (4f)/3 (at t=0) moves away from the lens with uniform velocity alpha . Find the velocity of the point object as a function of time t.

An illuminated object is placed on the principal axis of a converging lens so that real image is formed on the other side of the lens. If the object is shifted a little,

An illuminated object is placed on the principal axis of a converging lens so that real image is formed on the other side of the lens. If the object is shifted a little,

An illuminated object is placed on the principal axis of a converging lens so the a real image is formed on the other side of the lens. If the object is shifted a little,

A point object O is placed on the principal axis of a convex lens of focal length f=20cm at a distance of 40 cm to the left of it. The diameter of the lens is 10. An eye is placed 60 cm to right of the lens and a distance h below the principal axis. The maximum value of h to see the image is