Unity Unity 3

Question 1

Why is FixedUpdate() preferred over Update() for applying physics forces?

Accepted Answer

It runs at a consistent physics timestep

Answer

It runs more often

Answer

It ignores Time.deltaTime

Answer

It only runs once

Question 2

What does the [SerializeField] attribute do?

Accepted Answer

Exposes a private field in the Inspector

Answer

Hides a public field

Answer

Serializes data to disk

Answer

Marks a method as a coroutine

Question 3

Which collision callback fires when two colliders begin touching (both have colliders, one a non-trigger Rigidbody)?

Accepted Answer

OnCollisionEnter

Answer

OnTriggerEnter

Answer

OnMouseDown

Answer

OnControllerColliderHit

Question 4

What is required for OnTriggerEnter to fire?

Accepted Answer

At least one collider marked Is Trigger and a Rigidbody present

Answer

Both colliders must be solid

Answer

Two Rigidbodies with gravity

Answer

A MeshCollider only

Question 5

What does a Coroutine allow you to do in Unity?

Accepted Answer

Pause execution across frames using yield

Answer

Run code on a separate CPU thread

Answer

Compile shaders

Answer

Bake navigation meshes

Question 6

Which yield instruction waits for a real-time delay?

Accepted Answer

yield return new WaitForSeconds(t)

Answer

yield return null

Answer

yield break

Answer

yield return new WaitForEndOfFrame()

Question 7

What is the role of the AddComponent method?

Accepted Answer

Attaches a component to a GameObject at runtime

Answer

Removes a script

Answer

Loads a scene

Answer

Plays an animation