Question

6. A spherical mirror of focal length 20 cm forms an image on a screen
which is 30 cm away from the spherical mirror. The position of the object is
1 point
12 cm
-12 cm
60 cm
-60 cm

Answer 1

Answer:

Correct option is

A

9 cm

f=6 cm;μ=1.5;R=?

f1=(μ−1)(R11−R21)R1=2R2

61=(1.5−1)(2R21+R21)

61=21×2R23

R2=29cm

R1=2R2=9cm

Explanation:

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