Prelab Brief
To verify the laws of reflection: (1) angle of incidence = angle of reflection, and (2) the incident ray, reflected ray, and normal all lie in the same plane.
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Theory
Study the law of reflection with interactive mirror and ray diagrams. To verify the laws of reflection: (1) angle of incidence = angle of reflection, and (2) the incident ray, reflected ray, and normal all lie in the same plane.
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Formula
(1) angle of incidence = angle of reflection
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Aim
To verify the laws of reflection: (1) angle of incidence = angle of reflection, and (2) the incident ray, reflected ray, and normal all lie in the same plane.
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Apparatus
- Plane mirror
- Protractor / Circular disc
- Pins (drawing pins)
- Drawing board
- White paper
- Scale / Ruler
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Procedure
- Fix white paper on drawing board.
- Draw a line and place the mirror on it.
- Draw a normal (perpendicular) at the point of incidence.
- Place two pins along the incident ray.
- Looking from the other side, place two more pins such that all four appear in line.
- Measure angle of incidence and angle of reflection with protractor.
- Repeat for different angles.
Pre-Lab Questions
What is the main aim of the Reflection of Light Experiment?
Which principle is demonstrated in the Reflection of Light Experiment?
What apparatus is required for this experiment?
Why is Plane mirror used in this experiment?
What formula or relationship is verified in this experiment?
What precaution should be followed while performing this experiment?
What conclusion can be drawn from the Reflection of Light Experiment?