Write the Sign Convention for Both the mirrors Convex or Concave..... plz fast and give right answer..
@Aashiq.....
Answers
ʰᵉʸᵃ ᵐᵃᵗᵉ ʰᵉʳᵉ ⁱˢ ʸᵒᵘʳ ᵃⁿˢʷᵉʳ
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●Concave mirror:-
- object distance is negative, image distance is negative for real images and positive for virtual images. Focus is always neagative
●Convex mirror
-Image distance is positive, object distance is negative and focus is always positive.
HOPE IT HELPS YOU:)
Sign conventions for convex mirror
↪ The focal length of the convex mirror ( f ) is positive .
↪ The distance of the image from the mirror ( v ) is positive .
↪ The distance of the object from the mirror ( u ) is negative .
↪ The radius of curvature of the mirror ( r ) is positive .
↪ The height of the image ( h ) is taken as positive .
Sign conventions for concave mirror
↪ The focal length of the concave mirror ( f ) is negative .
↪ The distance of the image from the mirror ( v ) is negative .
↪ The distance of the object from the mirror ( u ) is negative when the image is formed behind the mirror while it is positive when the image is formed in front of the mirror .
↪ The radius of curvature of the mirror ( r ) is negative .
↪ The height of the image ( h ) is taken as positive when image is erect otherwise it is negative .
Explanation :
The optical centre is chosen as the origin of the coordinate system .
As we move upwards , the units will be positive .
As we move downwards , the units will be negative .
As we move towards the right , units will be positive .
As we move towards the left , units will be negative .