Learning objective

Recognize that all electromagnetic waves move at the same high speed when in a vacuum.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

Cambridge IGCSE PhysicsSubject contentCore content

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Understand this objective

Quick explanation

This point belongs to Electromagnetic spectrum, especially Electromagnetic spectrum outcomes.
You need to be able to recognize that all electromagnetic waves move at the same high speed when in a vacuum.
The key ideas to know are Know and State.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

KnowState

Why it matters

This objective helps connect Electromagnetic spectrum outcomes to exam-style questions, flashcards, and revision notes for Electromagnetic spectrum.

Revision tools

Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 3Theory (Core)1 marks

Description

All electromagnetic waves travel at the same speed in a vacuum, which is approximately 3.00 x 10^8 m/s.

a
State the speed of electromagnetic waves in a vacuum.
Your answer
Aim for approximately 1 distinct marking point.
[1]

Revision notestopic notes

Open the full topic revision notes when you are ready to review this objective in context.

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