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प्रश्न
State two applications of a convex lens.
उत्तर
The two applications of a convex lens are:
- It is used as an objective lens in a telescope, camera, slide projector, etc.
- With its short focal length, it is also used as a magnifying glass.
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संबंधित प्रश्न
"A convex lens can form a magnified erect as well as magnified inverted image of an object placed in front of it." Draw ray diagram to justify this statement stating the position of the object with respect to the lens in each case.
What is a lens?
The focal lengths of four convex lenses P, Q, R and S are 20 cm, 15 cm, 5 cm and 10 cm, respectively. The lens having greatest power is :
(a) P
(b) Q
(c) R
(d) S
Show by a diagram the refraction of two light rays incident parallel to the principal axis on a convex lens by treating it as a combination of a glass slab and two triangular glass prisms.
The focal length of a thin convex lens is ______ than that of a thick convex lens.
A convex lens has a divergent action and a concave lens has a convergent action.
State the position of object, position of image, nature of image when: Convex lens is used as in searchlight.
Object at 2F1 of a convex lens : Image at 2F2 : : Object at F1 : _______
Distinguish between Concave lens and Convex Lens.
Distinguish between:
Concave lens and Convex Lens
