Ray Optics and Optical Instruments Part 2

Section: Physics

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Question : 51 of 100

Marks: +1, -0

In an experiment for estimating the value of focal length of converging mirror, image of an object placed at

40\ \text{cm}

from the pole of the mirror is formed at distance

120\ \text{cm}

from the pole of the mirror. These distances are measured with a modified scale in which there are 20 small divisions in

1\ \text{cm}

. The value of error in measurement of focal length of the mirror is

\frac{1}{\text{K}}

\text{cm}

\text{K}

[30-Jan-2023 Shift 1]

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