In order to obtain a magnification of -0.7 of a concave mirror where should an object be placed
Answers
Given:
The magnification of -0.7 of a concave mirror.
To find:
In order to obtain a magnification of -0.7 of a concave mirror where should an object be placed?
Solution:
The mirror equation is given by,
1/v + 1/u = 1/f
where, v, u and f are the distances of the image and object from the mirror and the focal length respectively.
Magnification, M = hi/ho = − v/u
where, hi and ho are the heights of the image and object respectively.
It is given that the magnification is - 0.7.
- 0.7 < 1
and u > v
Therefore, the object should be placed beyond the centre of curvature.
Answer:
he mirror equation is given by,
1/v + 1/u = 1/f
where, v, u and f are the distances of the image and object from the mirror and the focal length respectively.
Magnification, M = hi/ho = − v/u
where, hi and ho are the heights of the image and object respectively.
It is given that the magnification is - 0.7.
- 0.7 < 1
and u > v
Therefore, the object should be placed beyond the centre of curvature.
Explanation: