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Question
Sat January 29, 2011

# What is mirror formula used for:

Sat January 29, 2011

In a spherical mirror, the distance of the object from its pole is called the object distance (u). the distance of the image from the pole of the mirror is called the image distance (v). You already know that the distance of the principal focus from the pole is called the focal length (f). The relation between these three quantities is given by the mirror formula. The mirror formula  is

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This formula holds good  for both concave and convex mirrors for all positions of the object.

## Table Showing the Sign Convention

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Wed February 15, 2017

# in an experiment the focal length of a convex lens a student obtained a sharp and inverted image of a distant tree on the screen behind the lens.she then removed the screen and looked through lens in the direction of the object .she will see a) an inverted image of the tree at the focus of the lens b)no image as the screen is removed c) a blurered image on the wall of laboratory d0 an erect image of the tree on the lens pls explain me the answer elaborately

Sun January 29, 2017

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