When an object is kept at a distance of ...

When an object is kept at a distance of 30cm from a concave mirror, the image is formed at a distance of 10 cm. If the object is moved with a speed of `9cm s^(-1)` the speed with which the image moves is

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When an object is kept at a distance of 30cm from a concave mirror, the image is formed at a distance of 10 cm. If the object is moved with a speed of 9m s^(-1) the speed with which the image moves is

When an object is kept at a distance of 30cm from a concave mirror, the image is formed at a distance of 10 cm. if the object is moved with a speed of 9 cm/s, find the speed (in cm/s) with which image moves.

An object is placed at a distance of 30 cm from a concave mirror and its real image is formed at a distance of 30 cm from the mirror. The focal length of the mirror is

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A concave mirror forms an image of the sun at a distance of 12 cm from it.

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