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संबंधित प्रश्न
If the numerical value of the power of this lens is 10 D, what is its focal length in the Cartesian system ?
Where must the object be placed for the image formed by a converging lens to be:
virtual, upright and larger than the object?
State whether concave lens has a real focus or a virtual focus.
Construct ray diagrams to illustrate the formation of a virtual image using a diverging lens.
A concave lens has focal length 15 cm. At what distance should the object from the lens be placed so that it forms an image at 10 cm from the lens? Also find the magnification produced by the lens.
Study the diagram below.
- Name the lens LL’.
- What are the points O and O' called ?
- Complete the diagram to form the image of the object AB.
- State three characteristics of the image.
- Name the lens which always forms an erect and virtual image.
- State whether the image in part (a) is magnified or diminished.
A lens forms an upright and diminished image of an object irrespective of its position. What kind of lens is this?
The power of a lens is negative. State whether it is convex or concave.
A virtual diminished image is formed when an object is placed between the optical centre and the principal focus of a lens.
(i) Name the type of lens which forms the above image.
(ii) Draw a ray diagram to show the formation of the image with the above stated characteristics.
