Answer: The variable that you manipulate is called the independent variable. The variable that you measure is called the dependent variable.
When a light wave encounters an object, they are either transmitted,reflected,absorbed,refracted,diffracted, or scattered depending on the wave
The correct option is D.
The critical angle is defined as the angle of incidence, which provides an angle of refraction of 90 degree. At any angle of incidence greater than the critical angle, all the light will totally reflected, resulting in total internal reflection.Thus, the critical angle is equal to the refractive index.
The planet Venus is mostly made of atmosphere hope this helps! ^0^