Physics, asked by GariMAJ13, 7 months ago

15.A concave mirror of radius 30 cm is placed in water. It’s focal length

in air and waterdiffer by

(a)15

(b)20

(c)30

(d) 0

Answers

Answered by ra8986942

1

the concave mirrior and radius of 30 cm is placed in water is 15

Answered by anantaprasadrout1977

1

Answer:

15cm

Explanation:

Radius=30cm

According to Question

F=?

R=30cm

we know that

F=r/2

F=30/2

F=15cm

Hence, Focal length=15cm

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