A light wave is propagating with plane wave fronts of the type x + y + z = constant. The angle made by the dir…

Question

A light wave is propagating with plane wave fronts of the type $$x + y + z = 	ext{constant}$$. The angle made by the direction of wave propagation with the $$x$$-axis is:

Accepted Answer

A. $$\cos^{-1} \left( \frac{1}{\sqrt{3}} \right)$$

Answer

B. $$\cos^{-1} \left( \sqrt{\frac{2}{3}} \right)$$

Answer

C. $$\cos^{-1} \left( \frac{1}{3} \right)$$

Answer

D. $$\cos^{-1} \left( \frac{2}{3} \right)$$

Answer & step-by-step solution

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