What is the shape of the orbits of planets?

What is the shape of the wavefront on Earth for sunlight?

Assume that the earth moves around the sun in a circular orbit of radius R and there exists a planet which also moves around the sun in circular orbit with an angular speed twice as large as that of the earth. The radius of the orbit of the planet is

What is the shape of chloroplasts in higher plants?

What is the shape of Fe(CO)_(5) ?

What is the shape of the equipotential surfaces for an isolated point charge ?

Answer the following questions : What is the shape and the size of the human eyeball?

An object takes 5s to reach the ground froma height of 5m on a planet.What is the value of g on the planet?

What is meant by the orbit of satellite?