Question 1

For a beam of light, the direction of polarization is defined as

Accepted Answer

A) the beam's direction of travel. 
B) the direction of the electric field's vibration. 
C) the direction of the magnetic field's vibration. 
D) the direction that is mutually perpendicular to the electric and magnetic field vectors. 
A) the beam's direction of travel. 
B) the direction of the electric field's vibration. 
C) the direction of the magnetic field's vibration. 
D) the direction that is mutually perpendicular to the electric and magnetic field vectors.

Question 2

A single slit, which is 0.050 mm wide, is illuminated by light of 550 nm wavelength. What is the angular separation between the first two minima on either side of the central maximum?

Accepted Answer

A) 0.36° 
B) 0.47° 
C) 0.54° 
D) 0.63° 
E) 0.73° 
A) 0.36° 
B) 0.47° 
C) 0.54° 
D) 0.63° 
E) 0.73°

Question 3

What is the limiting angle of resolution for the eye if the pupil diameter of the eye is 4.0 mm, a wavelength of light of 600 nm and index of refraction for the eye equal to 1.34?

Accepted Answer

A) 4.2 × 10-4 rad 
B) 2.1 × 10-4 rad 
C) 1.4 × 10-4 rad 
D) 1.1 × 10-4 rad 
E) 2.6 × 10-4 rad 
A) 4.2 × 10-4 rad 
B) 2.1 × 10-4 rad 
C) 1.4 × 10-4 rad 
D) 1.1 × 10-4 rad 
E) 2.6 × 10-4 rad

Question 4

What principle is responsible for the fact that certain sunglasses can reduce glare from reflected surfaces?

Accepted Answer

A) refraction 
B) reflection 
C) polarization 
D) diffraction 
E) total internal reflection 
A) refraction 
B) reflection 
C) polarization 
D) diffraction 
E) total internal reflection

Question 5

The polarization of sunlight is greatest at

Accepted Answer

A) sunrise. 
B) sunset. 
C) both sunrise and sunset. 
D) midday. 
E) remains constant throughout the day. 
A) sunrise. 
B) sunset. 
C) both sunrise and sunset. 
D) midday. 
E) remains constant throughout the day.

Question 6

If the 5th order minimum in the diffraction pattern is at 40°, at what angle is the 1st order minimum?

Accepted Answer

A) 8.0° 
B) 3.4° 
C) 4.0° 
D) 7.4° 
E) 1.7° 
A) 8.0° 
B) 3.4° 
C) 4.0° 
D) 7.4° 
E) 1.7°

Question 7

Light of wavelength 580 nm is incident on a slit of width 0.300 mm. An observing screen is placed 2.00 m from the slit. Find the position of the first order dark fringe from the center of the screen.

Accepted Answer

A) 0.26 mm 
B) 1.9 mm 
C) 3.9 mm 
D) 4.3 mm 
E) 7.7 mm 
A) 0.26 mm 
B) 1.9 mm 
C) 3.9 mm 
D) 4.3 mm 
E) 7.7 mm

Question 8

It is not possible to resolve detail of objects smaller than the wavelength of the radiation being used.

Accepted Answer

A) True 
 B)False

Exam 35: Diffraction and Polarization

For a beam of light, the direction of polarization is defined as

A single slit, which is 0.050 mm wide, is illuminated by light of 550 nm wavelength. What is the angular separation between the first two minima on either side of the central maximum?

What is the limiting angle of resolution for the eye if the pupil diameter of the eye is 4.0 mm, a wavelength of light of 600 nm and index of refraction for the eye equal to 1.34?

What principle is responsible for the fact that certain sunglasses can reduce glare from reflected surfaces?

The polarization of sunlight is greatest at

If the 5th order minimum in the diffraction pattern is at 40°, at what angle is the 1st order minimum?

Light of wavelength 580 nm is incident on a slit of width 0.300 mm. An observing screen is placed 2.00 m from the slit. Find the position of the first order dark fringe from the center of the screen.

It is not possible to resolve detail of objects smaller than the wavelength of the radiation being used.

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