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namvip6666
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Please! Help me.. I'm student.
1. A light ray reflected from a flat mirror moves through an angle of 143* as the mirror is rotated. Through **what angle was the mirror rotated?
2. The speed of light in a material is 0,57c. what is the critical angle of a light ray at the interface between the material and a vacuum?
3.The electric field of plane electro magnetic wave is E=240V/m. At the same instant of time the magnetic field is...?
Homework Statement
1. A light ray reflected from a flat mirror moves through an angle of 143* as the mirror is rotated. Through **what angle was the mirror rotated?
2. The speed of light in a material is 0,57c. what is the critical angle of a light ray at the interface between the material and a vacuum?
3.The electric field of plane electro magnetic wave is E=240V/m. At the same instant of time the magnetic field is...?