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प्रश्न
A lens forms an erect, magnified, and virtual image of an object. Name the device which uses this principle.
उत्तर
'Magnifying glass' uses this principle.
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संबंधित प्रश्न
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5
The following diagram shows an object AB and a converging lens L with foci F1 and F2. Draw two rays from the object AB and complete the diagram to locate the position of the image CD. Also mark on the diagram the position of eye from where the image can be viewed.
The following diagram shows an object AB and a converging lens L with foci F1 and F2 State three characteristics of the image in relation to the object.
A lens forms an erect, magnified, and virtual image of an object. Where is the object placed in relation to the lens?
Draw a neat labelled ray diagram to show the formation of an image by a magnifying glass. State three characteristics of the image.
What information about the nature of image is real or virtual, do you get from the sign of magnification + or -?
The focal length of a convex lens is 25 cm. At what distance from the optical centre of the lens an object be placed to obtain a virtual image of twice the size?
The maximum magnifying power of a convex lens of focal length 5 cm can be ______.
Copy and complete the following ray diagram.
State two uses of magnifying glass.
