 Least Time Activity Printer Friendly Version

Refer to the following information for the next eight questions.

Measure each of the following distances if a beam of light traveled each path. PA = ____ cm

 PB = ____ cm

 PC = ____ cm

 PD = ____ cm

 AS = ____ cm

 BS = ____ cm

 CS = ____ cm

 DS = ____ cm

Refer to the following information for the next four questions.

Time calculations using t = nd/c where c = 3 x 108 m/sec.
 timePA + AS = ____ sec

 timePB + BS = ____ sec

 timePC + CS = ____ sec

 timePD + DS = ____ sec

Refer to the following information for the next two questions.

Determine which path (PBS or PCS) requires the least time. If PBS has the least time, construct a normal at B. If PCS has the least time, construct a normal at C. Measure the angles between the top ray (q 1) and the bottom ray (q 2) with the normal.
 q 1 = _____

 q 2 = ____

Refer to the following information for the next two questions.

Use Snell's Law (n1 sin q 1 = n2 sin q 2) calculate an experimental value for the index of the second medium and then give a percent error against the accepted value of 1.5.
 experimental n2 = _____

 percent error = ____ Related Documents