Question

You place an object 20 cm in front of a convex mirror with a -15 cm focal length. Calculate the image position

Answer 1

Answer:

The final answer is 8.567.

Explanation:

Given,

Object position, u = 20cm

Focal length, f = -15cm

We need to find the position of the image, v.

According to the equation.

1 / f = 1 / u + 1 / v

1 / v = 1 / f - 1 / u

Substituting according to the equation,

1 / v = 1 / 15 - -1 / 20

1 / v =  1 / 15 + 1 / 20 = 20 + 15 / 300

v = 300 / 35

v = 8.567

The image is virtual.

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