Question:
The focal length of a concave mirror is 20 cm. At what distance the object is placed to obtain the virtual image?
The focal length of a concave mirror is 20 cm. At what distance the object is placed to obtain the virtual image?
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In concave mirrors, a virtual image is formed when the object is placed between the focal point and the mirror.
Updated On: May 12, 2025
- Less than 20 cm
- At 20 cm
- More than 20 cm
- None
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The Correct Option is A
Solution and Explanation
To obtain a virtual image from a concave mirror, the object must be placed between the focal point and the mirror. Since the focal length is given as 20 cm, the object must be placed at a distance less than 20 cm.
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