Question

5. A biconvex lens with a focal length of 8cm has an object which is 24 cm to the left of the lens.

(a) Sketch the lens and object – label the principal axis, optical axis, optical center

(b) Using suitable rays presented in class, show on your sketch in (a) where the image is expected to be

(c) Based on your sketch in (b) describe the characteristics of the expected image

(d) Use the lens maker and magnification equation to find the location and magnification of the image, whether it is real or virtual, upright or inverted

6. An electron in the hydrogen atom initially in the n=4 level jumps to the n=1 energy level.

(a) Make a sketch of the electron energy levels illustrating the transition.

(b) Using the equation presented in class, calculate the wavelength of the emitted light

(c) Calculate the frequency of the emitted light

Answer 1