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Science · 2026 · 3 marks
CBSE 2026 · Region 5 · Set 1 · Q35
(a)Draw the ray diagram for refraction of light through a glass prism and mark angle of refraction and angle of deviation.(b)When the path of a light ray refracted through a glass prism is reversed how will the angle of deviation change ? Explain.
(a)
Draw the ray diagram for refraction of light through a glass prism and mark angle of refraction and angle of deviation.
(b)
When the path of a light ray refracted through a glass prism is reversed how will the angle of deviation change ? Explain.
Marking-scheme solution
(a) 
\(\displaystyle \angle r=\) angle of refraction
\(\displaystyle \angle D=\) angle of deviation
Diagram Labelling
\(\displaystyle \angle r=\) angle of refraction
\(\displaystyle \angle D=\) angle of deviation
Diagram Labelling(b)
Angle of deviation will not change.
The ray of light will retrace its original path.
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CBSE Class 10 Science past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.