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प्रश्न
Why is the focal length of the lens, used as a magnifying glass, kept short?
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उत्तर
The focal length of the lens used as a magnifying glass is kept small to increase its magnifying power.
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
A lens forms an erect, magnified, and virtual image of an object. Name the device which uses this principle.
What is a magnifying glass?
A magnifying glass forms ______.
What information about the nature of image is real or virtual, do you get from the sign of magnification + or -?
If the magnification produced by a lens is - 0.5, the correct statement is ______.
Will the image formed by a magnifying glass be real or virtual?
Name the lens for which magnification is always less than 1.
An object is placed in front of a lens between its optical centre and the focus and forms a virtual, erect, and diminished image. Draw a ray diagram to show the formation of the image with the above-stated characteristics.
Draw a neat diagram to explain the action of a convergent (convex) lens as a reading glass (or magnifying glass). State the characteristics of the image formed.
