In: Physics
1. Two converging lenses have the same focal length of 5.00 cm. They have a common principal axis and are separated by 28.5 cm. An object is located 10.0 cm to the left of the left-hand lens. What is the image distance (relative to the lens on the right) of the final image produced by this two-lens system?
2. A plate glass window (n = 1.5) has a thickness of 5.2 mm. How long does it take light to pass perpendicularly through the plate?
3. In a certain time, light travels 4.20 km in a vacuum. During the same time, light travels only 2.62 km in a liquid. What is the refractive index of the liquid?
4. A layer of oil (n = 1.45) floats on an unknown liquid. A ray of light originates in the oil and passes into the unknown liquid. The angle of incidence is 69.8 degrees, and the angle of refraction is 62.4 degrees. What is the index of refraction of the unknown liquid?
Answer as specific as possible, please!