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3.2 Light

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Question 76

The principal axis of a converging lens is represented by a horizontal line, and the centre line of the lens is represented by a vertical line perpendicular to it.

An object of height 1.5 cm1.5\text{ cm}1.5 cm is placed upright on the principal axis, at a distance of 4.0 cm4.0\text{ cm}4.0 cm to the left of the lens. The converging lens has a focal length of 6.0 cm6.0\text{ cm}6.0 cm.

a.

Determine:

  1. the distance of the image from the lens,
  2. the height of the image.
[5]
b.

State and explain whether the image formed is real or virtual.

[2]
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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