Write down the magnification formula for a lens in terms of object distance and image distance. How does this magnification formula for a lens differ from the corresponding formula for a mirror?
Download our app for free and get started
Magnification (m) fomula for a lens is:$\text{m}=\frac{\text{v}(\text{distance of image})}{\text{u}(\text{distance of object})}$
Magnification fomula for a mirror has a minus sign (-) but the Magnification fomula for a lens has to minus sign. Magnification fomula for a mirror is: $\text{m}=-\frac{\text{v}(\text{distance of image})}{\text{u}(\text{distance of object})}$
Magnification fomula for a mirror has a minus sign (-) but the Magnification fomula for a lens has to minus sign. Magnification fomula for a mirror is: $\text{m}=-\frac{\text{v}(\text{distance of image})}{\text{u}(\text{distance of object})}$
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1View Solution
- Find the nature, position and magnification of the images formed by a convex lens of focal length 0.20 m if the object is placed at a distance of:
- 0.50m
- 0.25m
- 0.15m
- Which of the above cases represents the use of convex lens in a film projector, in a camera, and as a magnifying glass?
- 2View SolutionList four specific characteristics of the images of the objects formed by convex mirrors.
- 3View SolutionList two possible ways in which a concave mirror can produce a magnified image of an object placed in front of it. State the difference, if any, between these two images.
- 4View SolutionWhich kind of mirrors are used in the headlights of a motorcar and why?
- 5View SolutionA convex lens of focal length 25cm and a concave lens of focal length 10cm are placed in close focal contact with each other. Calculate the lens power of this combination.
- 6View SolutionWhat is meant by:
Draw diagram to show the action of convex mirror on a beam of parallel light rays. Mark on this diagram principal axis, focus F, centre of curvature C, pole P and focal length ƒ, of the convex mirror. - 7View SolutionDraw a labelled ray diagram to show the formation of image of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram.
- 8View SolutionDraw ray diagrams showing the image formation by a concave mirror when an object is placed:A little beyond centre of curvature of the mirror.
- 9View SolutionWhat are the important differences between looking at a photograph of your face and looking at yourself in a plane mirror?
- 10View SolutionWith the help of a labelled ray diagram, describe how a converging mirror can be used to give an enlarged upright image of an object.