Question

2 A convex mirror of focal length of produces an
image of the size of the object. The distance of
the object from the mirror is​

Answer 1

Answer:

$\bf u =(n -1) f.$

Explanation:

Accurate Question :

A convex mirror of focal length f forms an image which is 1/n times the object. The distance of the object from the mirror is.

Solution :

Given :

• Mirror type - Convex Mirror.
• A convex mirror of focal length f forms an image which is 1/n times the object.

To Find :

The distance of the object from the mirror is.

Solution :

We know that :

$\bigstar\;\boxed{\bf m= \dfrac{f}{(f - u)}\quad[Eq.1]}}}}$

So,

$\sf\\ \\\implies m = +\dfrac{1}{n}\\ \\\implies f = +f\\ \\\implies u= -u . \quad[\textbf{Since mirror is convex]}$

Now,

$\sf\\ \\\implies \dfrac{1}{n} = \dfrac{f}{(f+u)} \\ \\ \implies (f+u)=nf\\ \\ \implies u = nf - f\\ \\ \implies u =(n - 1) f$

Hence, We got the answer.

Answer 2

Answer:

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