Angle of prism is 'A' and its one surface is silvered. Light rays falling at an angle of incidence 2 A on first surface return back through the same path after suffering reflection at second silvered surface. Refractive index of the material of the prism is

Angle of prism is 'A' and its one surface is silvered. Light rays fall

1.	Angle of prism is 'A' and its one surface is silvered. Light rays falling at an angle of incidence 2 A on first surface return back through the same path after suffering reflection at second silvered surface. Refractive index of the material of the prism is
Answer» 2 SIN A 2 COS A 1/2 cos A tan A Answer :A

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Angle of prism is 'A' and its one surface is silvered. Light rays falling at an angle of incidence 2 A on first surface return back through the same path after suffering reflection at second silvered surface. Refractive index of the material of the prism is

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