Light of wavelength 5000 Å incidents on reflecting surface, then for ...... value of incidence angle, reflected and incident ray will be perpendicular.

Light of wavelength 5000 Å incidents on reflecting surface, then for

1.	Light of wavelength 5000 Å incidents on reflecting surface, then for ...... value of incidence angle, reflected and incident ray will be perpendicular.
Answer» `0^(@)` `30^(@)` `90^(@)` `45^(@)` SOLUTION :Here `i+r=90^(@)` but `i=r so 2i=90^(@)`

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Light of wavelength 5000 Å incidents on reflecting surface, then for ...... value of incidence angle, reflected and incident ray will be perpendicular.

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