At what distance from a converging lens of focal length 12 cm and object is placed in order that an image of magnification 1 will be produced?
Magnification 1 means that the image distance is the same as the object distance and the size of image is the same as the object. This happens only if the position of the object is at 2f, i.e, focal length. Thus, the object must be placed at a distance of 24 cm ( 2 × 12 ) from the converging lens.
Where should an object be placed in front of a convex lens of focal length 15 cm to obtain a linear magnification of 1 by 3?
Where should an object be placed in front of a convex lens to get a real image of the size of the object? Answer: At twice the focal length, the image formed by the convex lens is real and of the same size as the object.
At what distance should an object be placed from a convex lens of focal length 9 cm?
Solution. T the object should be placed at a distance of 72 cm from the lens.
Where should an object be placed in front of a convex lens of focal length 24 cm to obtain a real image of size five times the size of the object on the screen?
Ans. 0.16 m in front of lens.
Where should an object be placed so that a real and inverted image of same size is obtained by a convex lens?
Answer. Object should be place at 2f or centre of curvature C1 of convex lens, to get image of given property. Convex lens is also called converging lens. Parallel rays of light, passing through convex lens join or converge at a one point.
What is the position of the image when the object is placed at a distance of 24 cm from a concave mirror of focal length 24 cm?
Its image is inverted and is double the size of the object.
When an object is placed at a distance of 12 cm from a convex lens its image is formed at a distance of 24 cm on the other side of the lens what will be the magnification *?
Solution :- —> v is positive so, the image is formed at the distance of 24cm on the other side of the lens. –> magnification is positive, so the image is virtual and erect.