A wooden block hinged on post outside a door, is known

Solution(By Examveda Team)

A wooden block hinged on a post outside a door is known as a cleat.

The purpose of the cleat is to provide additional support and reinforcement to the door, ensuring that it remains securely in place and operates smoothly. Cleats are commonly used in various types of construction to enhance the stability and functionality of doors and other structural elements.

Options B and C are incorrect because:

Option B: A stop refers to a component that prevents a door from swinging too far, not a wooden block hinged on a post.

Option C: A horn is a projecting part of a door frame or window frame, not a wooden block hinged on a post.

Thus, the correct term for the described component is cleat.