diffract and spread out. diffract and come to a focal point. refract and come to a focal point. refract and spread out.
I gave my students this multiple choice question: When a beam of light passes through a clear, convex lens, the light will mostly

Only one answer is correct among these 4 choices:
- diffract and spread out.
- diffract and come to a focal point.
- refract and come to a focal point.
- refract and spread out.

Could you tell me which one is correct?

refract and come to a focal point.