The diagram shows how light rays bend when they enter the human eye. Which statement is not true about the eye in the diagram?
(A) It is farsighted.
(B) Images focus in front of the retina.
(C) The focal length is too short.
light
(D) A concave lens can correct the
vision problem.

Consider the particle-in-a-box problem in 1d. a particle with mass m is confined to move freely between two hard walls situated at x = 0 and x = l. the potential energy function is given as (a) describe the boundary conditions that must be satisfied by the wavefunctions ψ(x) (such as energy eigenfunctions). (b) solve the schr¨odinger’s equation and by using the boundary conditions of part (a) find all energy eigenfunctions, ψn(x), and the corresponding energies, en. (c) what are the allowed values of the quantum number n above? how did you decide on that? (d) what is the de broglie wavelength for the ground state? (e) sketch a plot of the lowest 3 levels’ wavefunctions (ψn(x) vs x). don’t forget to mark the positions of the walls on the graphs. (f) in a transition between the energy levels above, which transition produces the longest wavelength λ for the emitted photon? what is the corresponding wavele

Which feature of a heating curve indicates a change ofn state

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?