◈ Oracle Prep Sign Up Free

O-LevelPhysicsLight5054/11 · Oct/Nov 2016 · Q251 Mark

In the diagram, a convex lens forms an image I of an object O. The diagram is not drawn to scale. What is the focal length of the lens?

Diagram for this question, from the exam paper

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

A16 cm

B20 cm

C36 cm

D45 cm

✓ Correct answer

B: 20 cm

Practise more questions on this topic

Oracle Prep sorts past-paper questions by topic, so you can drill Light and see which topics are most likely to come up next.

Sign up free →

About this question

Topic: Light, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2016 Paper 1 Variant 1, question 25.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Physics questions

LightMay/June 20101m

Convex lenses are used in cameras and as magnifying glasses. Which types of image are formed?

LightMay/June 20111m

A ray of light strikes a plane mirror and is reflected. Which pair of angles must be equal in value?

LightMay/June 20111m

In which diagram is the path of the light ray not correct?

ElectricityMay/June 20131m

The electrical resistance of a metal wire varies with temperature as shown. The resistance of the wire at 0°C is 1.00…

ElectricityMay/June 20131m

A cell is connected in series with an ammeter and a lamp. The reading on the ammeter is 1 A. In which circuit, using …

ElectricityMay/June 20131m

The diagram represents part of a household circuit containing an electric kettle. Which row correctly identifies the …

← Browse all past-paper questions