Question

Object 20 CM in from of convex mirror image formed 15 CM behind the mirror find the focus ​

Answer 1

Explanation:

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Answer 2

Answer:

u=−20

(a) v=−15

f

1

=

v

1

+

u

1

f

1

=−

15

1

−

20

1

f=−

7

60

cm

Focus is negative so mirror will be Concave mirror

(b) v=+15

Using the same formula:

f

1

=

15

1

−

20

1

f=60cm

Focus is positive, So mirror will be Convex mirror

Explanation:

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