Monochromatic light
What Monochromatic light means in Physics A-Level, as defined for AQA.
Definitions of Monochromatic light
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Monochromatic light in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Light of a single wavelength or colour, which through a single narrow slit gives a broad central maximum with narrower, fainter secondary maxima on each side.
Light of a single wavelength, which a diffraction grating can be used to produce.
Topics that use Monochromatic light
- Diffraction (AQA A-Level)
Related terms
- Central maximum
- Constructive interference
- Diffraction grating equation
- Experimental control of diffraction variables
- Order of the maximum
- Path difference
- Secondary maxima
- Slit width and diffraction spreading
Using Monochromatic light in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge