Reference no: EM132592217

1. During the last transit of Venus on June 5 2012, Ms Nardella wanted to look at the Sun. After a failed attempt at making a pinhole camera, she resorted to looking through a pair of polarizing filters she borrowed from a Physics cupboard. She started with the two axes of polarization perpendicular to each other so that no light was transmitted. Then she slowly rotated one filter until about 6 millionths of the original light energy hit her eye. How many degrees did she need to rotate the filter? You may wish to include a diagram in your full answer.

a)89.8597 deg

b)88.8597 deg

c)0.9998 deg

d)0.1403 deg

e)3.4E-4 deg

2. A student shines a 511nm green laser at a diffraction grating. On the wall 3.00m away they see three dots. They know both the grating and the wall are perpendicular to the laser beam, and middle dot is the central maximum. The distance from the left dot to the right dot is 2.41m. What is the spacing of the grating in lines/cm?

a)7293

b)729284

c)1.371E-4

d)1.371E-6