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प्रश्न
Which type of lens is :
a converging lens, and which is
उत्तर
A lens that converges a parallel beam of light passing through it to a point is known as a converging lens. The convex lens is a converging lens. The ray diagram below shows the parallel light rays converging at the focus of a convex lens.
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संबंधित प्रश्न
A ray of light is going towards the focus of a concave lens. draw a ray diagram to show the path of this ray of light after refraction through the lens.
Construct ray diagrams to illustrate the formation of a virtual image using a converging lens,
When an object is placed 10 cm in front of lens A, the image is real, inverted, magnified and formed at a great distance. When the same object is placed 10 cm in front of lens B, the image formed is real, inverted and same size as the object.
What is the nature of lens B?
A concave lens of 20 cm focal length forms an image 15 cm from the lens. Compute the object distance.
Name one of the common defects of vision and the type of lens used to remove it.
What kind of lens is used to correct
short-sightedness
State three characteristics of the image of an extended source, formed by a concave lens.
Draw images in case of a concave lens when the object is at infinity.
Identify the device used as a spherical mirror or lens in following case, when the image formed is virtual and erect in case.
Object is placed between infinity and device, image formed is diminished and between focus and optical centre on the same side as that of the object.
