The index of refraction is the ratio of the speed of light in a vacuum to the speed of light in a medium. Which true statement is based on this definition? Question 3 options:

Materials with a low index of refraction cause light to refract very little.

Materials with a low index of refraction cause light to refract a great deal.

Materials with a low index of refraction do not refract light.

Could someone . i have tried to solve myself but my calculation is off

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.