The statement is false. The shape of an object's trajectory can be a number of different shapes, not just an ellipse.
Answer:
Reflecting telescope
Explanation:
A concave mirror is used to concentrate the light falling on it.
A concave mirror of large focal length acts as a reflecting type telescope.
As the rays of light coming from distant object falls on it, then after reflection the rays concentrate at the focus of the concave mirror and then we see the clear image of the distant object.
Reflecting telescopes