Question

physics question!!!@@@​

Answer 1

Answer:

Focal length of the concave mirror is 30 cm

Explanation:

As we know that the magnification is the ratio of image distance and object distance

Also we know it is defined as the ratio of image size and object size

So we will have

$\frac{h_i}{h_o} = \frac{d_i}{d_o} = 1$

so we have

$d_i = d_o$

now we know that object and image forms at same position when object is placed at center of curvature of the mirror

So we have

$2F = 30 cm$

$F = 15 cm$

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Topic : Image formation in concave Mirror

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