Incident rays of light parallel to the principal axis of a convex lens, after refraction by the lens, will:
Correct answer: A. Converge at the principal focus
- A. Converge at the principal focus
- B. Converge inside the principal focus
- C. Converge outside the principal focus
- D. Converge at the center of curvature
- E. diverge as long as theý are close to the lens
Explanation
Incident rays of light parallel to the principal axis of the convex lens converge at the principal focus.A convex lens also known as a converging lens is thick in the middle and thin at the edges. It converges the light rays coming from a source on the principal focus. A principle focus of a convex lens is defined as the point on the principal axis on which the light rays coming parallel to the principal axis converge after getting refracted from the convex lens.
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Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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