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Reflection and Refraction of Light — Free MYP2 Sciences Practice Questions
1QuestionApplications of Reflection and Refraction in TechnologyConcept Practice
2 marks~3 minCriterion A
The diagram shows a simple periscope with a component labelled X.
a
Identify component X. [1]
b
Describe how component X allows a person to see over an obstacle. [1]
Solutions
2QuestionRefraction Through Glass and WaterAssessment Practice
3 marks~5 minCriterion D
A swimming pool appears shallower than it really is because light bends — refracts — when it crosses from water into air.
a
Describe how refraction at the water–air boundary makes the pool appear shallower. Use the terms "angle of incidence" and "angle of refraction" in your answer. [1]
b
Explain how the angle at which you view the pool affects how shallow it appears. [1]
c
Explain one safety risk for a diver who relies only on the pool's visual appearance to judge its depth. [1]
Solutions
3QuestionApplications of Reflection and Refraction in TechnologyAssessment Practice
5 marks~8 minCriterion C
A periscope uses two mirrors placed parallel to each other to let a person see over an obstacle. Light hits the first mirror and reflects toward the second mirror. The graph shows the relationship between the angle of incidence and the angle of reflection for the first mirror.
a
State the angle of reflection when the angle of incidence is 45°. [1]
b
Explain why the angle of incidence on the second mirror is also 45°. Use the law of reflection and the fact that the mirrors are parallel in your answer. [2]
c
A student claims that tilting the second mirror slightly would change the direction of the final reflected ray but would not change the angle of incidence on the second mirror. Identify whether this claim is correct and explain your reasoning. [2]
Solutions
4QuestionPlane Mirrors and Image PropertiesAssessment Practice
5 marks~8 minCriterion B
A student places an object at different distances from a plane mirror and records the image distance for each trial.
The student plots image distance (y-axis) against object distance (x-axis) and draws a line of best fit.
| Object distance (cm) | 10 | 20 | 30 | 40 | 50 |
|---|---|---|---|---|---|
| Image distance (cm) | 10 | 20 | 30 | 40 | 50 |
The student plots image distance (y-axis) against object distance (x-axis) and draws a line of best fit.
a
Identify the type of relationship shown by the graph. [1]
b
Calculate the gradient of the line of best fit. Show your working. [2]
c
A second student claims that moving the object 15 cm further from the mirror will increase the image distance by more than 15 cm. Using the relationship you identified, explain whether this claim is correct. [2]
Solutions
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