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State the Relation Between Object Distance, Image Distance and Focal Length of a Spherical Mirror (Concave Mirror Or Convex Mirror). - Science

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प्रश्न

State the relation between object distance, image distance and focal length of a spherical mirror (concave mirror or convex mirror).

उत्तर

The relation between the object distance (u), the image distance (v) and the focal length (f) of a spherical mirror (a concave or convex mirror) is: 

`1/v+1/u=1/f`

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पाठ 4: Reflection of Light - Exercise 5 [पृष्ठ १९८]

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लखमीर सिंह Physics (Science) [English] Class 10
पाठ 4 Reflection of Light
Exercise 5 | Q 4 | पृष्ठ १९८

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संबंधित प्रश्‍न

 If the image formed by a mirror for all positions of the object placed in front of it is always diminished, erect and virtual, state the type of the mirror and also draw a ray diagram to justify your answer. Write one use such mirrors are put to and why.


A man standing in front of a special mirror finds his image having a very small head, a fat body and legs of normal size. What is the shape of:

(a) top part of the mirror?
(b) middle part of the mirror?
(c) bottom part of the mirror?
Give reasons for your choice.


An object is placed at a distance of 10 cm from a convex mirror of focal length 5 cm.

(a) Draw a ray-diagram showing the formation image
(b) State two characteristics of the image formed
(c) Calculate the distance of the image from mirror.


An arrow 2.5 cm high is placed at a distance of 25 cm from a diverging mirror of focal length 20 cm. Find the nature, position and size of the image formed. 


A convex mirror used as a rear-view mirror in a car has a radius of curvature of 3 m. If a bus is located at a distance of 5 m from this mirror, find the position of image. What is the nature of the image?


An object is placed at a distance of 100 cm from each of the above lenses A and B. Calculate (i) image distance, and (ii) magnification, in each of the two cases.


 Write true or false 

 At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.


A .............. mirror is obtained on silvering the outer surface of a part of a hollow glass sphere.


A ray of light passing through centre of curvature of a spherical mirror, after reflection


State whether true or false. If false, correct the statement.

The convex mirror always produces a virtual, diminished and erect image of the object.


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