Part A
How would the photographer use the polarizing filter to find out the direction of
polarization of the light coming from the blue sky? Her only reference is the polarization
axis of the filter.
rotate the filter until the light's intensity is maximum; light's polarization is along filter's
axis
Correct
Part B
Find the angle between the filter's polarizing axis and the direction of polarization of
light necessary to increase the ratio of the clouds' intensity to that of the blue sky so that
it is three times the normal value.
Express your answer in degrees, to three significant figures.
=65.91° Correct