A convex lens is made up of three different materials as shown in the figure. For a point object placed on its axis, the number of images formed are

A convex lens is made up of three different materials as shown in figure. A point obiect, placed on its axis, the number of images formed are ...........

A convex lens is made of 3 layers of glass of 3 different materials as in the figure. A point object is placed on its axis. The number of images of the object are

The lens shown in the figure drawn below is made of two different materials. A point object is placed on the axis. The number of images formed is ___________.

Assertion : A convex lens made of two different materials, A point object is placed on the principal axis, two images formed. Reason:Two images formed by convex lens is always 'virtual'.

A lens whose radii of curvature are different is forming the image of an object placed on its axis. If the surfaces of the lens facing the object and image are interchanged will the position of the image change?

A double convex lens whose radii of curvature are R_(1) and R_(2) forms the image of a point object, placed on its axis. If the lens is revered, face to face, then the ratio of the distances of the images in the first and second case will be