Question

a concave mirror produces three times magnified enlarged real image of an object placed at 10 cm in front of it where is the image located and find the focal length and draw the ray diagram.​

Answer 1

Explanation:

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Answer 2

Explanation:

Given,

Magnification, m=3

Object distance, u=10cm

We know,

Magnification, m=−

u

v

3=

−10

−v

⇒ v=30cm

From mirror formula,

f

1

=

v

1

+

u

1

f

1

=

30

1

−

10

1

=

30×10

10−30

=

300

−20

f=−15cm

Focal length, f=−15cm