Curriculum
Course: OCR A Level Physics A H556
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Curriculum

OCR A Level Physics A H556

1. Development of Practical Skills in Physics

0/56 Dr Dabour Hub Science Diagram and Course Material

2. Foundations in Physics

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3. Forces and Motion

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4. Electrons, Waves and Photons

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OCR H556 chapter questions and answers

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Quiz

1.3.8 Using a Laser or Light Source – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Which is the most important laser precaution?
Never look directly into the beam or its reflections
Use a large screen
Keep the room bright
Use a filament lamp as well
2.
A grating has 500 lines per mm. The spacing d is:
2.0 × 10−3 m
2.0 × 10−6 m
5.0 × 105 m
2.0 × 10−9 m
3.
For d sin θ = nλ, increasing λ while keeping n and d fixed will:
Decrease θ
Leave θ unchanged
Increase θ
Remove the central maximum
4.
A double-slit pattern has fringe spacing w = λD/a. Doubling D:
Halves w
Leaves w unchanged
Doubles w
Quadruples w
5.
Why is a laser convenient for double-slit experiments?
It supplies coherent monochromatic light
It emits many colours
It has low brightness
It needs no safety checks
6.
Light of wavelength 500 nm meets a grating with d = 1.5 μm. The highest order visible is:
1
3
4
2
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
Part of 1. Development of Practical Skills in Physics — see every lesson and quiz in this unit.
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