Skip to content

Course home

Question bank·5.1 Reflection, refraction and lenses
Sign up

5.1 Reflection, refraction and lenses

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243
Question 21

An optician checks a diverging spectacle lens using a small illuminated target. The optical centre of the lens is at x=0x=0x=0 and its principal foci are at x=−40 cmx=-40\ \mathrm{cm}x=−40 cm and x=+40 cmx=+40\ \mathrm{cm}x=+40 cm. The target is at x=−120 cmx=-120\ \mathrm{cm}x=−120 cm. From the top of the target, one ray travels through the optical centre and another reaches the lens parallel to the principal axis.

Which statement correctly describes the target's image?

[1]
A

a virtual image between x=−120 cmx=-120\ \mathrm{cm}x=−120 cm and x=−40 cmx=-40\ \mathrm{cm}x=−40 cm

B

a real image beyond x=+40 cmx=+40\ \mathrm{cm}x=+40 cm

C

a virtual image between x=−40 cmx=-40\ \mathrm{cm}x=−40 cm and x=0x=0x=0

D

a real image between x=0x=0x=0 and x=+40 cmx=+40\ \mathrm{cm}x=+40 cm

Markscheme

5.1 Reflection, refraction and lenses Questions

  1. GCSE
  2. /Physics
  3. /5.1 Reflection, refraction and lenses

93 exam-style questions on Edexcel GCSE Physics 5.1 Reflection, refraction and lenses, covering 5.1.1 Reflection, refraction and total internal reflection, 5.1.2 Specular and diffuse reflection, 5.1.3 Colour of light: absorption and filters, 5.1.4 Lenses: power, focal length and shape, 5.1.5 Ray diagrams for converging and diverging lenses, and 5.1.6 Real and virtual images. Each one has a worked solution and a mark scheme showing where the marks go.

More questions