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Q: What is the focal length of a converging lens which produces a virtual image four time the size of the object the image being 15 cm from the lens?
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Related questions

In the distance from a converging lens to the object?

c virtual,upright,and larger than the object.


Where must an object to be located for a converging mirror to produce a virtual image?

if the focal length is greater than the object distance from the lens


Where must an object be located for a converging mirror to produce a virtual image?

if the focal length is greater than the object distance from the lens


A converging mirror has a focal length of 20cm Where should an object be placed so that its virtual image will be twice as tall as the object?

10cm


Is a magnifying glass a converging lens or a diverging lens?

A converging lens is a simple magnifying glass when the object is within one focal length of the lens. The image is then virtual, magnified, and right-side up.


If the distance from a converging lens to the object is less than the focal length of the lens what willl the image appear to be?

C: virtual, upright, and larger than the object


A converging lens of focal length f produces a real image of a real object when the object is what?

farther then f from the lens


Is the image from a converging lens real or virtual?

If the object is more distant from the lens than the focal length of the lens, a real image is formed.


Which of the following is accurate in describing converging and diverging lenses?

If a single lens forms a virtual image of an object, thenthe lens could be either a diverging or a converging lens.Which statement about a single thin lens is correctA diverging lens always produces a virtual upright image.


If an object is closer to a convex lens than one focal length the image is .?

If an object lies within the focal length of a convex lens, its image will be erect, bigger in size and virtual. It will be on the same side of the object.


What kind of lens can be used to produce a virtual image?

Convex lens produces both real and virtual images. But concave lens produces only virtual images for real objects. If object is virtual then real image could be produced by a concave lens.


What is a negative lens is the same as?

If the lens equation yields a negative image distance, then the image is a virtual image on the same side of the lens as the object. If it yields a negative focal length, then the lens is a diverging lens rather than the converging lens in the illustration.