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Mirrors and lenses can be used in telescopes - Edexcel - GCSE Physics - Question 3 - 2012 - Paper 1
Question 3
Mirrors and lenses can be used in telescopes. (a) Which diagram best shows what happens to a ray of light when it hits a plane mirror? Put a cross (X) in the box n... show full transcript
Worked Solution & Example Answer:Mirrors and lenses can be used in telescopes - Edexcel - GCSE Physics - Question 3 - 2012 - Paper 1
Step 1
Which diagram best shows what happens to a ray of light when it hits a plane mirror?
Answer
When a ray of light strikes a plane mirror, it gets reflected. According to the law of reflection, the angle of incidence (the angle between the incident ray and the normal) is equal to the angle of reflection (the angle between the reflected ray and the normal). This interaction is best illustrated by diagram B, where the light ray reflects off the mirror correctly according to these laws.