Lenses (physics Only) (GCSE Physics)

A student measures the focal length of a converging lens by focusing parallel sunlight to a point on a screen and measuring the distance from lens to screen. Which property makes this method accurate?

The lens equation is 1/f = 1/u + 1/v (with sign convention). If an object is at infinity (u ? 8) for a lens, where does the image form?

An object 2.0 cm tall is placed 15 cm in front of a converging lens that produces an image 30 cm on the other side. What is the image height?

Which statement about virtual images formed by lenses is correct?

A diverging (concave) lens always produces an image that is:

A beam of red light and a beam of blue light enter a glass prism at the same angle. Which statement is true about their angles of refraction in the glass?

Which phenomenon explains why a prism separates white light into colours?

Which ray rule is correct when drawing ray diagrams for a thin converging lens?

Why do simple eyeglass lenses suffer from chromatic aberration (colours focusing at different distances)?

Which ray through a thin lens passes undeviated (in a straight line) through the centre of the lens?

A positive thin lens is used to correct hyperopia (long-sightedness). Where does this lens form the virtual image of a nearby object relative to the eye?