Physics spherical concave mirror has a radius of curvature of 20.0 cm. An object is placed...

Question

Question

Physics

Answer 1

Answer #1

Given,

R = 20 cm ; object distance = o = 15 cm

We know that for curved mirrors, focal length is f = R/2 = 202 = 10 cm

We need to find the image distance i and its nature.

We know from lens equation that,

1/f = 1/i + 1/o

i = o x f / ( o - f ) = 15 x 10 / (15 - 10) = 30 cm

Hence the image distance = 30 cm.

M = -i/o = -30/15 = -2 (negative magnification implies inverted images)

Hence, the image is 30 cm far from the right of the vertex of the mirror. The image is enlarged, real and inverted.

Answer 2

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