Question 1

Some double-pane airplane windows darken when the inner pane is rotated. The panes are

Accepted Answer

A) thin films. 
B) Polaroid filters. 
C) optical fibers. 
A) thin films. 
B) Polaroid filters. 
C) optical fibers.

Question 2

An ideal Polaroid will transmit 50% of incident sunlight. How much light will be transmitted by two ideal Polaroids oriented with their axes parallel to each other?

Accepted Answer

A) 0% 
B) 50% 
C) 100% 
D) between 0% and 50% 
E) between 50% and 100% 
A) 0% 
B) 50% 
C) 100% 
D) between 0% and 50% 
E) between 50% and 100%

Question 3

Light will NOT pass through a pair of Polaroids when their axes are

Accepted Answer

A) 45 degrees to each other. 
B) parallel. 
C) perpendicular. 
D) all of the above 
E) none of the above 
A) 45 degrees to each other. 
B) parallel. 
C) perpendicular. 
D) all of the above 
E) none of the above

Question 4

Three-dimensional viewing normally involves

Accepted Answer

A) parallax. 
B) two-eye vision. 
C) an ability to see 'around' things. 
D) all of the above 
E) none of the above 
A) parallax. 
B) two-eye vision. 
C) an ability to see 'around' things. 
D) all of the above 
E) none of the above

Question 5

Polaroid sunglasses reduce much glare by polarization axes that are

Accepted Answer

A) vertical. 
B) horizontal. 
C) at right angles to each other. 
A) vertical. 
B) horizontal. 
C) at right angles to each other.

Exam 29: Light Waves

Some double-pane airplane windows darken when the inner pane is rotated. The panes are

An ideal Polaroid will transmit 50% of incident sunlight. How much light will be transmitted by two ideal Polaroids oriented with their axes parallel to each other?

Light will NOT pass through a pair of Polaroids when their axes are

Three-dimensional viewing normally involves

Polaroid sunglasses reduce much glare by polarization axes that are

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