The image formed by a convex mirror of focal | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) For a convex mirror,the magnification $m$ is given by $m = \frac{f}{f - u}$,where $f$ is the focal length and $u$ is the object distance (which is

Vedclass · Accepted Answer

$(n - 1) f$

Vedclass · Answer

(C) For a convex mirror,the magnification $m$ is given by $m = \frac{f}{f - u}$,where $f$ is the focal length and $u$ is the object distance (which is negative).Given that the image size is $(1/n)$ times the object size,the magnification $m = +\frac{1}{n}$ (since the image is virtual and erect).Substituting the values: $\frac{1}{n} = \frac{f}{f - u}$.Rearranging the equation: $f - u = nf$.Solving for $u$: $u = f - nf = -(n - 1)f$.The distance of the object from the mirror is the magnitude of $u$,which is $|u| = (n - 1)f$.

The image formed by a convex mirror of focal length $f$ is $(1/n)$ times the size of the object. The distance of the object from the mirror is:

Similar Questions

$A$ boy stands $30 \,cm$ in front of a mirror. The height of his erect image is $1/5 \,th$ of his actual height. The mirror used is ..... .

$A$ concave mirror of focal length $100 \ cm$ is used to obtain the image of the sun,which subtends an angle of $30'$. The diameter of the image of the sun will be.....$cm$.

$A$ mirror is used to produce an image with magnification of $\frac{1}{4}$. If the distance between the object and its image is $40 \ cm$,then the focal length of the mirror is . . . . . . . (in $cm$)

What is linear magnification? Obtain the equation of linear magnification for a concave mirror.

Vedclass Test Series

Exam Paper Generator

Online Exam Module