A person is viewing an extended object. If a converging lens is placed in front of his eyes, will he feel that the size has increased?

A screen is placed a distance 40 cm away from an illuminated object. A converging lens is placed between the source and the screen and it is attempted to form the image of the source on the screen. If no position could be found, the focal length of the lens

An object is placed at a distance of 30 cm from a converging lens of focal length 15 cm. A normal eye (near point 25 cm, far point infinity) is placed close to the lens on the other side. (a) Can the eye see the object clearly? (b) What should be the minimum separation between the lens and the eye so that the eye can clearly see the object? c. Can a diverging lens, placed in contact with the converging lens, help in seeing the object clearly when the eye is close to the lens?

An object is placed 20cm to the left of a converging lens having focal length 16cm. A second, identical lens is placed to the right of the first lens, such that the image formed by the combination is of the same size and orientation as the object is. Find the separation between the lenses.

State the position of the object in front of a converging lens if : It is used as a magnifying lens.

An object is placed at a distance f in front of a concave lens of focal length f. Locate its image.

State the position of the object in front of a converging lens if : It produces a real and same size image of the object.

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,

A convex lens of focal length 10cm is placed 30 cm in front of a second convex lens also of th esame focal length. A plane mirror is placed after the two lenses. Where should a point object be placed in front of the first lens so that it imagees on to itself?

An object is placed in front of a converging lens at a distance greater than twice the focal length of the lens. Draw a ray diagram to show the formation of the image.

A converging lens forms a five fold magnified image of an object. The screen is moved towards the object by a distance d=0.5 m, and the lens is shifted so that the image has the same size as the object. Find the power of lens and the initial distance between the object and the screen.