Concave Lens and Image Formation Quiz

<p>The formula to calculate the magnification produced by a lens is magnification = (-) image distance / object distance.</p> Signup and view all the answers

<p>The formula to calculate the focal length of a lens is 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance.</p> Signup and view all the answers

<p>The object distance for a concave lens with a focal length of 10cm, if the magnification is ¼, is 40cm.</p> Signup and view all the answers

<p>Magnification (m) = -v/u, where v is the image distance and u is the object distance.</p> Signup and view all the answers

<p>For a concave lens, the focal length (f) and the image distance (v) are negative.</p> Signup and view all the answers

<p>1/f = 1/v - 1/u, where f is the focal length, v is the image distance, and u is the object distance.</p> Signup and view all the answers

The distance between the lens and the object.

The distance between the lens and the image.

The ratio of the image height to the object height, indicating how much the image is magnified or reduced.

The distance between the lens and the point where parallel rays of light converge after passing through the lens. It is always negative for a concave lens.

The formula to calculate the magnification produced by a lens. Magnification (m) is equal to the negative of the image distance (v) divided by the object distance (u).

The formula to determine the focal length (f) of a lens. 1/f is equal to the sum of 1/object distance (do) and 1/image distance (di).

The formula to calculate the object distance (u) for a concave lens. 1/f is equal to 1/v - 1/u, where f is the focal length and v is the image distance.

For a concave lens, the focal length (f) and the image distance (v) are always negative.

The image formed by a concave lens is always virtual, upright, and diminished.