lidia plans an experimental investigation to see how the thickness of a lens affects the point where a beam…

lidia plans an experimental investigation to see how the thickness of a lens affects the point where a beam of light is focused. she plans to shine light through a lens and measure the distance to a screen that is placed where the beam focuses.\nwhat are the controls in lidias investigation?\no the material and thickness of the lens\no the type of light and the material of the lens\no the distance to the screen and the type of light\no the thickness of the lens and the distance to the screen

lidia plans an experimental investigation to see how the thickness of a lens affects the point where a beam of light is focused. she plans to shine light through a lens and measure the distance to a screen that is placed where the beam focuses.\nwhat are the controls in lidias investigation?\no the material and thickness of the lens\no the type of light and the material of the lens\no the distance to the screen and the type of light\no the thickness of the lens and the distance to the screen

Answer

Brief Explanations:

In an experiment to test the effect of lens - thickness on light - focusing point, the independent variable is lens thickness. Controls are factors that are kept constant. The type of light and the material of the lens should be kept the same so that only the effect of lens thickness on the focusing point is measured. The distance to the screen is the measured variable, not a control.

Answer:

B. the type of light and the material of the lens