The focal length of a concave mirror is $20$ cm. An object is placed at distance $20$ cm from mirror. Its image will be formed

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f

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O

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Solution

The correct option is D At $\infty$
When object is placed at focal length, then image will be formed at infinity

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The focal length of a concave mirror is 20 cm. An object is placed at distance 20 cm from mirror. Its image will be formed

The correct option is D At ∞When object is placed at focal length, then image will be formed at infinity

The focal length of a concave mirror is $20$ cm. An object is placed at distance $20$ cm from mirror. Its image will be formed

The correct option is D At $\infty$
When object is placed at focal length, then image will be formed at infinity