If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Geometry of prism

You might need: Calculator


A light ray hits a glass prism at i=30.0° and exits at e=45.0°.
The prism has a refractive index, n=1.5 and is surrounded by air.
What is the angle of deviation, δ?
Choose 1 answer: