Answer:
40 cm
Explanation:
We are given that
Magnification of concave mirror, m=4
Object distance, u=-10cm
We have to find the position of image.
We know that
Magnification of concave mirror, m=[tex]-\frac{v}{u}[/tex]
Using the formula
[tex]4=-\frac{v}{-10}[/tex]
[tex]4=\frac{v}{10}[/tex]
[tex]v=4\times 10[/tex]
[tex]v=40cm[/tex]
Hence, the image is formed at distance 40 cm behind the mirror.
