Question 1

The spacings between double-slit interference fringes is increased if the slits are

Accepted Answer

A) closer together. 
B) farther apart. 
C) narrower. 
D) wider. 
E) none of these 
A) closer together. 
B) farther apart. 
C) narrower. 
D) wider. 
E) none of these A

Question 2

When long-wavelength light is seen in the interference colors of a soap bubble,the wavelength being cancelled is relatively

Accepted Answer

A) long. 
B) short. 
C) neither 
A) long. 
B) short. 
C) neither B

Question 3

The polarization axes of ordinary sunglasses 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. A

Question 4

Diffraction is more pronounced through relatively

Accepted Answer

A) small openings. 
B) large openings. 
C) same for each 
A) small openings. 
B) large openings. 
C) same for each

Question 5

Polarization is a property of

Accepted Answer

A) transverse waves. 
B) longitudinal waves. 
C) both 
D) neither 
A) transverse waves. 
B) longitudinal waves. 
C) both 
D) neither

Question 6

Iridescent colors seen in the pearly luster of an abalone shell are due to

Accepted Answer

A) refraction. 
B) diffraction. 
C) dispersion. 
D) polarization. 
E) interference. 
A) refraction. 
B) diffraction. 
C) dispersion. 
D) polarization. 
E) interference.

Question 7

The function of polarizing filters in viewing 3-D slides or movies is to provide each eye

Accepted Answer

A) the ability to see parallax. 
B) a balanced intensity. 
C) an independent left or right-hand view. 
D) a stereoscopic view. 
E) with light polarized at right angles to each other. 
A) the ability to see parallax. 
B) a balanced intensity. 
C) an independent left or right-hand view. 
D) a stereoscopic view. 
E) with light polarized at right angles to each other.

Question 8

The polarization axes of glasses for 3-D viewing 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.

Question 9

A thin film appears blue when illuminated with white light.The color being cancelled by destructive interference is

Accepted Answer

A) red. 
B) green. 
C) white. 
D) blue. 
E) none of these 
A) red. 
B) green. 
C) white. 
D) blue. 
E) none of these

Question 10

Because of absorption,a Polaroid will actually transmit 40% of incident unpolarized light.Two such Polaroids with their axes aligned will transmit

Accepted Answer

A) 0%. 
B) 40%. 
C) 100%. 
D) between 0% and 40%. 
E) between 40% and 100%. 
A) 0%. 
B) 40%. 
C) 100%. 
D) between 0% and 40%. 
E) between 40% and 100%.

Question 11

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

Accepted Answer

A) parallel. 
B) perpendicular. 
C) 45 degrees to each other. 
D) two of these 
E) all of these 
A) parallel. 
B) perpendicular. 
C) 45 degrees to each other. 
D) two of these 
E) all of these

Question 12

Consider the interference colors seen in a film of gasoline on a wet street.The function of the water is to provide a

Accepted Answer

A) means of spreading the gasoline into a thin film. 
B) means of slowing the rapid evaporation of gasoline. 
C) chemical bond with the gasoline. 
D) second reflecting surface. 
E) all of these 
A) means of spreading the gasoline into a thin film. 
B) means of slowing the rapid evaporation of gasoline. 
C) chemical bond with the gasoline. 
D) second reflecting surface. 
E) all of these

Question 13

Holograms employ the principle of

Accepted Answer

A) diffraction. 
B) interference. 
C) both of these 
D) neither of these 
A) diffraction. 
B) interference. 
C) both of these 
D) neither of these

Question 14

Diffraction is a result of

Accepted Answer

A) refraction. 
B) reflection. 
C) interference. 
D) polarization. 
E) dispersion. 
A) refraction. 
B) reflection. 
C) interference. 
D) polarization. 
E) dispersion.

Question 15

A painting looks less flat when viewed with

Accepted Answer

A) one eye. 
B) both eyes. 
C) Polaroid glasses. 
A) one eye. 
B) both eyes. 
C) Polaroid glasses.

Question 16

A property of non-cubic transparent crystals is that polarized light that travels through them

Accepted Answer

A) breaks up into two perpendicular planes. 
B) is depolarized. 
C) is rotated. 
D) slows in speed. 
E) none of these 
A) breaks up into two perpendicular planes. 
B) is depolarized. 
C) is rotated. 
D) slows in speed. 
E) none of these

Question 17

For radio reception,diffraction is

Accepted Answer

A) helpful. 
B) a hindrance. 
C) not a factor. 
A) helpful. 
B) a hindrance. 
C) not a factor.

Question 18

Interference is a property of

Accepted Answer

A) light waves. 
B) sound waves. 
C) water waves. 
D) all of these 
E) none of these 
A) light waves. 
B) sound waves. 
C) water waves. 
D) all of these 
E) none of these

Question 19

An ideal Polaroid will transmit 50% of unpolarized light incident on it.How much light is transmitted by two ideal Polaroids that are 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 20

When you view a soap film by white light coming from almost behind your head,you see a certain color.A friend on the other side of the film likely sees

Accepted Answer

A) the same color. 
B) a different color. 
A) the same color. 
B) a different color.

Exam 29: Light Waves

The spacings between double-slit interference fringes is increased if the slits are

When long-wavelength light is seen in the interference colors of a soap bubble,the wavelength being cancelled is relatively

The polarization axes of ordinary sunglasses are

Diffraction is more pronounced through relatively

Polarization is a property of

Iridescent colors seen in the pearly luster of an abalone shell are due to

The function of polarizing filters in viewing 3-D slides or movies is to provide each eye

The polarization axes of glasses for 3-D viewing are

A thin film appears blue when illuminated with white light.The color being cancelled by destructive interference is

Because of absorption,a Polaroid will actually transmit 40% of incident unpolarized light.Two such Polaroids with their axes aligned will transmit

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

Consider the interference colors seen in a film of gasoline on a wet street.The function of the water is to provide a

Holograms employ the principle of

Diffraction is a result of

A painting looks less flat when viewed with

A property of non-cubic transparent crystals is that polarized light that travels through them

For radio reception,diffraction is

Interference is a property of

An ideal Polaroid will transmit 50% of unpolarized light incident on it.How much light is transmitted by two ideal Polaroids that are oriented with their axes parallel to each other?

When you view a soap film by white light coming from almost behind your head,you see a certain color.A friend on the other side of the film likely sees

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