What is the angle between the beams

Reference no: EM13251293

Two overlapping beams of light of different wavelength ?a = 840 nm and ?b = 460 nm co-propagate through air and strike the same point on a block of unknown material at an incidence angle i = 45°.

The beams travel through the block at speed va = 0.73 c and vb = 0.72 c.

What is the angle between the beams travelling through the material?

Reference no: EM13251293

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