Question

Under what circumstances will an image be located at the focal point of a lens or mirror?

a) When the object is at infinity.

b) When the object is at the center of curvature.

c) When the object is at the focal point.

d) When the object is beyond the focal point.

Answer 1

An image will be located at the focal point of a lens or mirror when the object is placed at the focal point.

Step-by-step explanation:

An image will be located at the focal point of a lens or mirror under the following circumstance:

1. When the object is placed at the focal point.

If the object is positioned at the focal point, the parallel light rays coming from the object will refract and converge at the focal point, creating a real and inverted image at the same location.

Therefore, the correct answer is c) When the object is at the focal point.