السلام عليكم ورحمة الله وبركاته ..
اخوتي ..انا طالبه جامعيه تخصصي الفيزياء حاليا ادرس مادة الموجات والضوء وقد اعطتنا مسالتين واحب فهل من مساعده ؟؟
A beam of light traveling in air is in lident on a slad of transparent material the incident beam makes angle of 40 with the normal and the refracted beam makes angle of 26 with the normal.
Find the index of refraction of the material? Where N air=1
A lasser in compoct disc player generats light that has a wave leng the 780nm in air (where c=3x10^8m\s)
1-find the speed of this light once it enter the plastic of a compact disc (n=1.55).
2-what is the wave length of this light in the plastic
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