# Recent questions tagged focal

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Determine the image distance and image height for a 4.0-cm tall object placed 12.0-cm from a converging having a focal length of 18.0 cm.
A 2.85-cm diameter coin is placed a distance of 31.4 cm from a diverging lens that has a focal length of-11.6 cm. Determine the image distance and diameter of the image. What is the OST of the image?A 2.85-cm diameter coin is placed a distance of 31.4 cm from a diverging lens that has a focal length of-11.6 cm. Determine the image distance and dia ...
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A candle is placed at a distance of $30 \mathrm{~cm}$ from a converging lens having a focal length of $10 \mathrm{~cm}$.
A candle is placed at a distance of $30 \mathrm{~cm}$ from a converging lens having a focal length of $10 \mathrm{~cm}$.A candle is placed at a distance of $30 \mathrm{~cm}$ from a converging lens having a focal length of $10 \mathrm{~cm}$. (a) At what distance fro ...
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The focal length of a concave spherical mirror is equal to 1 meter. What is the radius of curvature of this mirror?
The focal length of a concave spherical mirror is equal to 1 meter. What is the radius of curvature of this mirror?The focal length of a concave spherical mirror is equal to 1 meter. What is the radius of curvature of this mirror? ...
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A converging thin lens has a focal length of 27 centimeters. An object is placed 9 centimeters from the lens. Where is the image of this object formed?