Physics
A lens forms the image of an object placed at a distance of 45 cm from it on a screen placed at a distance 90 cm on the other side of it.
(a) Name the kind of lens.
(b) Find : (i) the focal length of lens, and (ii) the magnification of the image.
Related Questions
A lens forms the image of an object placed at a distance 15 cm from it, at a distance 60 cm in front of it.
Find —
(i) the focal length,
(ii) the magnification, and
(iii) the nature of image.
A convex lens forms an inverted image of size same as that of the object which is placed at a distance 60 cm in front of the lens.
Find —
(a) The position of image, and
(b) The focal length of the lens
An illuminated object lies at a distance 1.0 m from a screen. A convex lens is used to form the image of the object on a screen placed at a distance of 75 cm from the lens.
Find —
(i) the focal length of lens, and
(ii) the magnification.
An object is placed at a distance of 20 cm in front of a concave lens of focal length 20 cm. Find —
(a) the position of the image, and
(b) the magnification of the image