LASIK (Laser Assisted In Situ Keratomileusis) procedure is being made popular for vision correction. Which one of the following statements in this context is not correct ?

Which one of the following statements is not correct for light rays ?

Which one of the following statement is not correct?

Which of the following statement is not correct?

Which one of the following statements about the aperture of a convex lens is correct?

When a light beam falls on a triangular glass prism, a band of colours is obtained. Which one of the following statements is correct in this regard ?