3.2. Light
A subsection of Physics, 5054, through 3. Waves
Listing 10 of 242 questions
shows three rays of light travelling in water from a light source S. One ray of light is totally internally reflected at the boundary between water and air. 25° 34° air boundary S water (not to scale) On , mark the critical angle and label it c. State why only one of the three rays is totally internally reflected. Calculate: the refractive index for water refractive index = the critical angle for the boundary between water and air. critical angle =
5054_s19_qp_22
THEORY
2019
Paper 2, Variant 2
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A dentist uses a plane mirror to see the back of a tooth. A plane mirror produces an image of an object. Describe the position of this image. shows the plane mirror used by the dentist to see the point labelled X on the tooth. mirror dentist’s eye X On : mark the position of the image of X formed by the mirror draw a ray of light from X to show how the dentist can see the tooth. State one characteristic of the image formed by the plane mirror other than its position.
5054_s20_qp_21
THEORY
2020
Paper 2, Variant 1
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Two mirrors, A and B, are inclined at an angle of 60° to each other. Light strikes mirror A at an angle of 30°, as shown in . mirror B mirror A 30° 60° ray of light Determine the angle of incidence at mirror A. angle of incidence at A = Determine the angle of incidence at mirror B. angle of incidence at B = Describe the path of the reflected ray after it leaves mirror B. A plane mirror hanging on a wall is used to form the image of an object. State three characteristics of the image formed. 1. 2. 3.
5054_s20_qp_22
THEORY
2020
Paper 2, Variant 2
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Questions Discovered
242