The data given in the table below was obtained from an investigation into the refraction of light atan air to glass boundary.Angle of incidence Angle of refraction20° 13°30° 19°40° 25°50° 30°Describe an investigation a student could complete in order to obtain similar data to that given inthe table above.Your answer should consider any cause of inaccuracy in the data.A labelled diagram may be drawn as part of your answer
Question
The data given in the table below was obtained from an investigation into the refraction of light atan air to glass boundary.Angle of incidence Angle of refraction20° 13°30° 19°40° 25°50° 30°Describe an investigation a student could complete in order to obtain similar data to that given inthe table above.Your answer should consider any cause of inaccuracy in the data.A labelled diagram may be drawn as part of your answer
Solution
To conduct a similar investigation, a student could follow these steps:
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Gather Materials: You will need a semi-circular glass block, a ray box or laser pen, a protractor, a pencil, and a sheet of paper.
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Set Up the Experiment: Place the semi-circular glass block on the sheet of paper and trace its boundary. This will help in realigning the block if it moves during the experiment.
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Measure the Angle of Incidence: Shine the light from the ray box or laser pen onto the flat side of the glass block at an angle. Use the protractor to measure this angle, known as the angle of incidence. Mark the incident ray on the paper.
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Measure the Angle of Refraction: The light will refract, or bend, as it passes through the glass block. Mark the refracted ray on the other side of the block on the paper. Remove the block and use the protractor to measure the angle between the normal (a line perpendicular to the surface at the point of incidence) and the refracted ray. This is the angle of refraction.
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Repeat the Experiment: Repeat steps 3 and 4 for different angles of incidence and record all the data.
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Analyze the Data: Compare the angles of incidence and refraction.
Potential sources of inaccuracy in this experiment could include misalignment of the light source, inaccurate measurement of angles due to parallax error, and not marking the incident and refracted rays accurately. To minimize these inaccuracies, ensure the light source is stable and aligned correctly, measure angles carefully with the eye directly above the protractor, and mark the rays accurately.
A labelled diagram could include the semi-circular glass block, the incident ray, the refracted ray, the angle of incidence, and the angle of refraction.
Similar Questions
A ray of light is travelling from a glass block into the surrounding air. Its angle of incidence onto the boundary between the glass and the air is equal to 20°. What can be said about its angle of refraction as it travels from the glass into the surrounding air?It will be equal to 20°It will be less than 20°It will be greater than 20°It is impossible to say2A light ray is traveling from air into a rectangular glass block. It is normally incident onto the glass-air boundary (in other words, it is travelling along the normal as it strikes the surface of the glass). What can be said about its angle of refraction as it travels into the glass block?It is impossible to sayIt will be equal to 0°It will be equal to 180°It will be equal to 90°3A ray of light is travelling from air into water at an angle of incidence of 50°. What can be said about its angle of refraction as it travels into the water?It will be equal to 50°It will be less than 50°It is impossible to sayIt will be greater than 50°4Some waves in a lake are travelling from shallow water into deep water. They are striking the boundary between the shallow and deep water at an angle to the normal. What will happen to the waves as they travel from the shallow water into the deep water?They will refract away from the normalIt is impossible to say without knowing the wavelength and speed of the wavesThey will not refract and will continue moving in their original direction of motionThey will refract towards the normal
A ray of light incidents on a plane mirror at an angle of 30°. The deviation produced in the ray isSelect an answerA30°B60°C90°D120°
A ray of light is incidenting normally on a plane mirror. The angle of reflection will beSelect an answerA0°B90°CWill not be reflectedDNone of the above
Use the simulation to find out the refractive index of glass.
If a ray of light in a glass is incident on an air surface at an angle greater thanthecritical angle, the ray will:A. Refract only B. Reflect onlyC. Partially reflect & refract D. Diffract only
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