The depth of the dip in a star's brightness due to the transit of a planet depends most directly on
A)the planet's size.
B)the eccentricity of the planet's orbit.
C)the size of the planet's orbit.
D)the planet's mass.
E)the planet's density.

Question

Quizplus · Accepted Answer

The depth of the dip in a star's brightness during a transit depends directly on the ratio of the planet's surface area to the surface area of the star being blocked. This, in turn, depends on the planet's size. Larger planets will block more light and create a larger dip in brightness compared to smaller planets.

The Depth of the Dip in a Star's Brightness Due