Question

A spherical mirror forms a real image at the same position of the object placed at a distance of 20cm in front of the mirror.

a) What type of mirror is this?

b) What is the magnification? Justify your answer.

c) Find out the focal length and radius of curvature of the mirror.

Pls answer correctly​

Answer 1

Answer:

(a) Concave

(b) Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a calculated number also called "magnification".

(c) u= Distance of object =20 cm

v= Distance of image =30 cm

Mirror formula =

v

1

−

u

1

=

f

1

=

−30

1

+

20

1

=

f

1

600

20−30

=

f

1

f=−60 cm

- sign means concave

f=60 cm

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