CBSE Class 10 Science 2021 Term 1 Solved Paper

Question : 40 of 60

Marks: +1, -0

The radius of curvature of a converging mirror is

30 {\cm}

. At what distance from the mirror should an object be placed so as to obtain a virtual image?

Solution:

Radius of curvature of converging mirror(concave mirror) is

30 {\cm}

.
To obtain a virtual image in case of concave mirror, object should be placed between pole and focus. Using, Focal length:

\;{\;\text " Radius "\;}/{2}=\;{30}/{2}=15 {\cm}

Therefore, object should be placed between 0

{\cm}

and

15 {\cm}

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