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प्रश्न
What type of lens is used to correct
hypermetropia
उत्तर
Convex lenses are used to correct hypermetropia.
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संबंधित प्रश्न
A ray of light travelling in air is incident on a parallel-sided glass slab (or rectangular glass slab). Draw a ray-diagram indicating the change in its path in glass.
Where should an object be placed in order to use a convex lens as a magnifying glass?
State whether convex lens has a real focus or a virtual focus.
A lens forms an erect, magnified, and virtual image of an object. Name the type of lens.
Where should an object be placed in front of a convex lens to get a real image of the size of the object?
Where must a point source of light be placed in front of a convex lens so as to obtain a parallel beam of light?
An object 4.0 cm in size, is placed 25.0 cm in front of a concave mirror of focal length 15.0 cm.
(i) At what distance from the mirror should a screen be placed in order to obtain a sharp image?
(ii) Find the size of the image.
(iii) Draw a ray diagram to show the formation of the image in this case.
State the position of object, position of image, nature of image when: Convex lens is used in observing biological specimens.
Differentiate convex lens and concave lens.
