5. Use the Wheatstone bridge report to answer the following question: a cylindrical wire has
a resistance R and resistivity $\rho$. If its length and diameter are BOTH cut in half,
(a) What will be its new resistance?
(b) What will be its new resistivity?
For the following two problems, in each case, solve the thin lens equation for the image
distance q, draw the ray diagrams and describe the images for the cases involving a thin
converging lens of focal length 15 cm.
6) When an object is located at 20 cm, between the lens and the center of curvature of the
lens ($2f > p > f$)
F
Convex
Lens
F