What causes a ray of white light to split into seven colors when passed through a prism? a. refraction b. reflection c. filtering d. absorption

Refraction causes the light to bend. Each wavelength bends by a slightly different amount.

The light doesn't "split into 7 colors". It smears, into all of the thousands of colors that eyes can detect, plus some that they can't.

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

f=ma newton

f=100x2.5=250n