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When a Spherical Mirror is Held Towards the Sun and Its Sharp Image is Formed on a Piece of a Carbon Paper for Some Time, a Hole is Burnt in the Carbon Paper. What is the Advantage of Using a Carbon Paper Rather than a White Paper? - Science

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प्रश्न

When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper. 

 What is the advantage of using a carbon paper rather than a white paper?

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उत्तर

A carbon paper is a good absorber of sunlight; hence, it burnt quickly.​

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अध्याय 4: Reflection of Light - Exercise 2 [पृष्ठ १७९]

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लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 4 Reflection of Light
Exercise 2 | Q 20.5 | पृष्ठ १७९

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संबंधित प्रश्न

Which type of mirror can form a real image?


A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?


Name the two types of spherical mirrors. What type of mirror is represented by the: 

front side of a shining steel spoon?


When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper. 

 At which point of the spherical mirror the carbon paper is placed?


What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.


Draw separate diagram for the formation of virtual image of an object by a concave mirror.


State the position of object for which the image formed by a concave mirror is of same size.


Discuss the position and nature of image formed by a convex mirror when an object is moved from infinity towards the pole of mirror. 


A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find

  1. the focal length of mirror
  2. position of image.

Choose the correct alternative and rewrite the following:

Mirror used by a dental surgeon is ..........................


Define the following term in relation to concave mirror.

Pole


Define the following term in relation to concave mirror.

Principal axis


Define the following term in relation to concave mirror.

Aperture


Mention one main application of convex mirrors.

Name the spherical mirror which can produce a real and diminished image of the object.

What is the focal length of a plane mirror?

Name the spherical mirror which can produce a real and diminished image of an object.

What is a mirror formula?


Name the two types of spherical mirrors.


What is the difference between virtual images of an object formed by a concave mirror and a convex mirror?


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