Curriculum
Course: IB Physics SL
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Curriculum

IB Physics SL

Theme A — Space, Time and Motion

0/80 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/87 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/60 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/41 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/59 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/54 Dr Dabour Hub Science Diagram and Course Material
Quiz

C.3.7 Young’s Double-Slit Experiment – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
In Young's experiment the fringe separation increases if
The slits are moved further apart
The screen is moved closer
Blue light is replaced by red
The slit width is doubled
2.
A bright fringe appears where the path difference is
(n + ½)λ
nλ
λ/4
2nλ only
3.
λ = 500 nm, D = 1.0 m, d = 0.25 mm. The fringe separation is
2.0 mm
0.50 mm
1.25 mm
0.20 mm
4.
With white light, the central fringe is
Red
Dark
Blue
White
5.
The slit separation is halved with everything else unchanged. The fringe separation
Halves
Stays the same
Doubles
Quadruples
6.
The experiment is evidence that light
Is a particle
Behaves as a wave
Is longitudinal
Has a unique speed
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  • 5
  • 6
Part of Theme C — Wave Behaviour — see every lesson and quiz in this unit.
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