मराठी

What information about the nature of image is real or virtual, do you get from the sign of magnification + or -?

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प्रश्न

What information about the nature of image is real or virtual, do you get from the sign of magnification + or -?

एका वाक्यात उत्तर
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उत्तर

A positive sign of magnification indicates that the image is virtual, while a negative sign indicates that the image is real.

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पाठ 5: Refraction through a Lens - EXERCISE - 5 (C) [पृष्ठ १२६]

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सेलिना Physics [English] Class 10 ICSE
पाठ 5 Refraction through a Lens
EXERCISE - 5 (C) | Q 5. (i) | पृष्ठ १२६

संबंधित प्रश्‍न

The following diagram shows an object AB and a converging lens L with foci F1 and F2 State three characteristics of the image in relation to the object.


A lens forms an erect, magnified, and virtual image of an object. Name the device which uses this principle.


Draw a neat labelled ray diagram to show the formation of an image by a magnifying glass. State three characteristics of the image.


Ray diagram for the formation of image by a magnifying glass.


An illuminated object lies at a distance 1.0 m from a screen. A convex lens is used to form the image of the object on a screen placed at a distance of 75 cm from the lens. Find:

  1. the focal length of the lens, and
  2. the magnification.

Name the lens for which magnification is always less than 1.


How is the magnification (m) produced by a lens related to the object distance (u) and the image distance (v)?


Show with the help of a ray diagram, the path of the ray when incident normally on the first surface of the glass block, through the block and the liquid.


An erect, magnified, and a virtual image is formed when an object is placed between the optical centre and principal focus of a lens.
(i) Name the lens.
(ii) Draw a ray diagram to show the formation of the image with the above-stated characteristics.


What is a magnifying glass (or a simple microscope)? Draw a ray diagram to show how a convex lens may be used as a magnifying glass. Where should the object be placed? State three characteristics of the image formed.


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