In: Physics
1. What is the index of refraction of a material for which the wavelength of light is 0.83 times its value in a vacuum?
2. A diffraction grating has 2400 lines per centimeter. At what angle in degrees will the third-order maximum be for 636 nm wavelength light?
3. What is m for the highest-order maximum for 462 nm light falling on double slits separated by 19.5 μm? Remember, m can only be an integer.
Plz answer all, don't have money for more questions. will give thumbs up in appreciation :)