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What is the sign conventions for concave, convex mirrors and lenses ?

What is the sign conventions for concave, convex mirrors and lenses?

Grade:12

3 Answers

pawan deep
41 Points
11 years ago

Sign convention for mirrors are

1732_12765_mirrors-sign-convention-table.jpeg

and for lenses

image
image

The following table gives the sign convention for lenses:

Types of lens

U

v

f

Height of the image

Height of the object

Real

Virtual

Real

Virtual

Real

Virtual

Convex

-

+

-

+

No virtual focus

-

+

+

Concave

-

No real image is formed

-

No real focus

-

No real image is formed

+

+

If satisfied please reply.........
Pranshu
12 Points
4 years ago
In sign convention ...."u"..(the object distance ) is alwys -ve nd height of object is alwys +ve for both mirrors nd lenses.
Gourav karmakar
11 Points
3 years ago
•The space in which reflected Ray will lie will be treated as real space .
•The space in which the reflected Ray will not lie will be treated as virtual space .
[Real space will be treated as +ve and virtual space treated as -ve ]

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