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3.2 Light

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Question 53

Which statement about a thin converging lens is correct?

A

The focal length is the distance from the optical center of the lens to the principal focus.

B

A converging lens always forms a real image of a real object.

C

Any ray of light passing through the optical center of the lens is refracted through the principal focus.

D

The principal focus is the point where all refracted rays of light intersect.

Markscheme

3.2 Light Questions

  1. IGCSE
  2. /Physics
  3. /3.2 Light

216 exam-style questions on CIE IGCSE Physics 3.2 Light, covering 3.2.1a Reflection of light, 3.2.1b Images in a plane mirror, 3.2.2 Refraction of light, 3.2.2a Refraction of light, 3.2.2b Total internal reflection, 3.2.2c Refractive index and critical angle, 3.2.2d Optical fibres, 3.2.3a Converging and diverging lenses, 3.2.3b Ray diagrams and the nature of images, 3.2.3c Virtual images and the magnifying glass, 3.2.3d Correcting long-sightedness and short-sightedness, and 3.2.4 Dispersion of light. Each one has a worked solution and a mark scheme showing where the marks go.

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