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Light Reflection and Refraction
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11/08/2021 12:24 pm
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Describe the nature of image formed when the object is placed at a distance of 20 cm from a concave mirror of focal length 10 cm.
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11/08/2021 12:27 pm
Here, u = -20 cm, f = -10 cm
\(\frac{1}{v}\) + \(\frac{1}{u}\) = \(\frac{1}{f}\)
\(\frac{1}{v}\) + \(\frac{1}{-20}\) = \(\frac{1}{-10}\)
\(\frac{1}{v}\) = \(\frac{1}{20}\) - \(\frac{1}{10}\) =\(-\frac{1}{20}\)
∴ v = -20 cm
So, image will be real and inverted