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Rhiannon Red
Rhiannon Red asked in Science & MathematicsPhysics · 5 years ago

Critical angle and incident ray question?

A laser beam enters a symmetrical prism at right angles close to its upper edge exactly as shown in the diagram above.

The refractive index of the prism material is n = 1.4 and its angle is 30°.

Calculate the critical angle for the prism-air interface.

After passing through the prism, what angle does the beam make with the incident ray?

1 Answer

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    Lv 6
    5 years ago

    n_1 sin theta_1 = n_2 sin theta_2 use this formula.

    hope that helps.

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