Question

Unpolarized light of intensity I0 is sent through 5 polarizers, each rotated 75◦ from the previous polarizer. What is the intensity transmitted by this system?

A 0.00000000 I0

B 0.00023156 I0

C 0.00001007 I0

D 0.00004027 I0

E 0.00010068 I0

The density of ice is about 900 kg/m3, and the density of water is about 1000 kg/m3. A cubic block of ice 1 meter on a side floats in water. Assuming that the lowest square face of the cube is horizontal, the height of the block above the water line is...

.A 0.1 m

B 0.2 m

C 0.9 m

D 0.5 m

E 0.8 m

A beam of un-polarized lights with intensity I is sent through two polarizers with transmission axis perpendicular to each other What’s the outgoing light intensity?

A 0

B 2 I

C 1.5 I

D 1/2 I

E Cannot be determined

Answer 1