Question

if an object is placed 20cm from the concave mirror of focal length 10 cm then the image will be found at​

Answer 1

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Answer 2

Answer:

Thus, it is formed beyond centre of curvature and the nature of image is real, inverted and magnified

By mirror formula,

1 over f equals 1 over v plus 1 over u

fraction numerator 1 over denominator negative 12 end fraction equals 1 over v plus fraction numerator 1 over denominator negative 20 end fraction

1 over v equals fraction numerator 1 over denominator negative 12 end fraction minus fraction numerator 1 over denominator negative 20 end fraction

1 over v equals negative space 8 over 240 equals negative space space 0.033

rightwards double arrow space v equals space space minus 30 space c m

space

The negative sign indicates that the image is formed at the same side as that of object. The image distance is 30 cm.

Thus, it is formed beyond centre of curvature and the nature of image is real, inverted and magnified