GCSE Edexcel Physics Core practical: Investigating refraction: A student does an experiment to

Question

A student does an experiment to determine the critical angle for glass.
The student shines a ray of light into a semicircular glass block and measures the angles i and r, as shown in Figure 14.

(i) The ray of light does not change direction when it enters the glass block at point X.

Which of these explains why the ray does not change direction when it enters the glass block at point X?

A. The ray enters along a normal to the edge of the block.
B. The ray is absorbed.
C. The ray reflects back into the air.
D. The ray does not enter the glass block.

A student does an experiment to determine the critical angle for glass - Edexcel - GCSE Physics - Question 8 - 2023 - Paper 1

Worked Solution & Example Answer:A student does an experiment to determine the critical angle for glass - Edexcel - GCSE Physics - Question 8 - 2023 - Paper 1

The ray of light does not change direction when it enters the glass block at point X.

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