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Cambridge IGCSE Physics practice

What is a light-year?

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Show answerThe Solar System revisionRevise the key idea

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MCQ

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cambridge_mcq

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Topic

The Solar System

Exam-style question

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What is a light-year?.

  1. A.The time light takes to travel
  2. B.The distance light travels in one year
  3. C.The speed of light
  4. D.A unit of time

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Paper 3 structured question: The Solar System

Paper 3Theory (Core)3 marks

Description

Light Travel Time Calculation

Calculate the time it takes for light to travel from the Sun to Mars, which is approximately 2.28 x 10^11 meters away.

  1. a

    Calculate the time taken for light to travel from the Sun to Mars.

    Aim for approximately 3 distinct marking points.

    [3]