Question 1

When using 545-nm light,how far is the adjustable mirror of a Michelson interferometer moved when 200 fringe shifts are counted?

Accepted Answer

A)  1.36 × 10-6 m 
B)  2.73 × 10-5 m 
C)  5.45 × 10-5 m 
D)  1.36 × 10-4 m 
E)  ​2.7 × 10-4 m 
A)  1.36 × 10-6 m 
B)  2.73 × 10-5 m 
C)  5.45 × 10-5 m 
D)  1.36 × 10-4 m 
E)  ​2.7 × 10-4 m B

Question 2

The 2.4-m diameter Hubble space telescope has been placed into Earth orbit by the space shuttle.Assuming a wavelength of 684 nm,what angular resolution could this telescope achieve by Rayleigh's criterion? (1 nm = 10−9 m)

Accepted Answer

A)  3.5 × 10−6 rad 
B)  4.3 × 10−6 rad 
C)  2.8 × 10−6 rad 
D)  3.4 × 10−7 rad 
E)  ​2.4 × 10−6 rad 
A)  3.5 × 10−6 rad 
B)  4.3 × 10−6 rad 
C)  2.8 × 10−6 rad 
D)  3.4 × 10−7 rad 
E)  ​2.4 × 10−6 rad D

Question 3

A camera lens is initially set at f/8 for a shutter speed of 1/250 s.If the amount of lighting on the subject is unchanged,and the lens is set at f/4,what is the proper shutter speed at this setting?

Accepted Answer

A)  1/1000 s 
B)  1/500 s 
C)  1/250 s 
D)  1/2 s 
E)  1/8​ s 
A)  1/1000 s 
B)  1/500 s 
C)  1/250 s 
D)  1/2 s 
E)  1/8​ s A

Question 4

A camera is used to photograph the full moon,which has an angular diameter of 0.53°.The image on the film is 2.3 mm in diameter.What is the focal length of the lens?

Accepted Answer

A)  2.3 mm 
B)  500 mm 
C)  250 mm 
D)  790 mm 
E)  ​25.5 mm 
A)  2.3 mm 
B)  500 mm 
C)  250 mm 
D)  790 mm 
E)  ​25.5 mm

Question 5

An astronomical telescope has an objective lens with focal length fo and has an eyepiece with focal length fe.A second telescope has objective and eyepiece lenses with quadruple the focal length of the first telescope.Which telescope gives the greater magnification and by what factor?

Accepted Answer

A)  The first telescope gives 16 times the magnification of the second. 
B)  The second telescope gives 16 times the magnification of the first. 
C)  Both telescopes give the same magnification. 
D)  The actual focal lengths must be known to answer this question. 
E)  ​The second telescope gives 4 times the magnification of the first. 
A)  The first telescope gives 16 times the magnification of the second. 
B)  The second telescope gives 16 times the magnification of the first. 
C)  Both telescopes give the same magnification. 
D)  The actual focal lengths must be known to answer this question. 
E)  ​The second telescope gives 4 times the magnification of the first.

Question 6

The eye parts iris,retina,cornea,and ciliary muscle,play roles related to ________,________,________,and ________ in a camera.

Accepted Answer

A)  the aperture,the lens,the ccd,focusing 
B)  the aperture,the ccd,the lens,focusing 
C)  the lens,the aperture,focusing,the ccd 
D)  the lens,focusing,the ccd,the aperture 
A)  the aperture,the lens,the ccd,focusing 
B)  the aperture,the ccd,the lens,focusing 
C)  the lens,the aperture,focusing,the ccd 
D)  the lens,focusing,the ccd,the aperture

Question 7

Even relatively small astronomical telescopes are ordinarily not used for terrestrial observation because:

Accepted Answer

A)  their images are too bright. 
B)  their images are too dim. 
C)  their images are inverted. 
D)  their images are not in color. 
A)  their images are too bright. 
B)  their images are too dim. 
C)  their images are inverted. 
D)  their images are not in color.

Question 8

A magnifying lens with a focal length of 10 cm has what maximum magnification? (Assume the near point is 25 cm).

Accepted Answer

A)  1.4 
B)  3 
C)  11 
D)  4 
E)  ​10 
A)  1.4 
B)  3 
C)  11 
D)  4 
E)  ​10

Question 9

The Yerkes refracting telescope has a 1-m diameter objective lens of focal length 20 m and an eyepiece of focal length 3.5 cm.What is the magnification of the planet Mars as seen through this telescope?

Accepted Answer

A)  140 
B)  280 
C)  570 
D)  1,000 
E)  ​35 
A)  140 
B)  280 
C)  570 
D)  1,000 
E)  ​35

Question 10

Tripling the focal length in a telephoto lens,while keeping the aperture size constant,will change the f-number by what factor?

Accepted Answer

A)  1/9 
B)  1/3 
C)  3 
D)  9 
E)  ​1/6 
A)  1/9 
B)  1/3 
C)  3 
D)  9 
E)  ​1/6

Question 11

Doubling the focal length of the objective lens of a compound microscope will change the magnification by what factor?

Accepted Answer

A)  1/4 
B)  1/2 
C)  2 
D)  4 
E)  ​
  
A)  1/4 
B)  1/2 
C)  2 
D)  4 
E)  ​

Question 12

Quadrupling the f-number of a camera lens will change the light intensity admitted to the film by what factor?

Accepted Answer

A)  1/16 
B)  1/4 
C)  4 
D)  16 
E)  ​3 
A)  1/16 
B)  1/4 
C)  4 
D)  16 
E)  ​3

Question 13

A 1.7-m tall woman stands 8.0-m in front of a camera with a 5.0-cm focal length lens.What is the size of the image formed on film?

Accepted Answer

A)  23.5 cm 
B)  2.7 cm 
C)  1.1 cm 
D)  68.0 cm 
E)  ​0.37 cm 
A)  23.5 cm 
B)  2.7 cm 
C)  1.1 cm 
D)  68.0 cm 
E)  ​0.37 cm

Question 14

The Palomar reflecting telescope has a parabolic mirror with an 80 m focal length.What is the magnification achieved when an eyepiece of focal length 2.5 cm is used?

Accepted Answer

A)  800 
B)  1,100 
C)  1,600 
D)  3,200 
E)  ​2,000 
A)  800 
B)  1,100 
C)  1,600 
D)  3,200 
E)  ​2,000

Question 15

What resolving power must a diffraction grating have in order to distinguish wavelengths of 686.30 nm and 687.50 nm? (1 nm = 10−9 m)

Accepted Answer

A)  343 
B)  572 
C)  686.9 
D)  915 
E)  ​687.5 
A)  343 
B)  572 
C)  686.9 
D)  915 
E)  ​687.5

Question 16

Two thin lenses have powers P1 and P2,measured in diopters.If these lenses are placed in contact with one another,the resulting power is:

Accepted Answer

A)  more than both P1 and P2. 
B)  less than both P1 and P2. 
C)  half-way between P1 and P2. 
D)  P1 + P2. 
A)  more than both P1 and P2. 
B)  less than both P1 and P2. 
C)  half-way between P1 and P2. 
D)  P1 + P2.

Question 17

A telescope has an objective lens with a focal length of 100 cm and an eyepiece of focal length 3.0 cm.What is the angular magnification of the telescope?

Accepted Answer

A)  30 
B)  33 
C)  75 
D)  140 
E)  ​103 
A)  30 
B)  33 
C)  75 
D)  140 
E)  ​103

Question 18

Which term below identifies the eye defect characterized by an inability to see distant objects clearly?

Accepted Answer

A)  myopia 
B)  presbyopia 
C)  hyperopia 
D)  astigmatism 
A)  myopia 
B)  presbyopia 
C)  hyperopia 
D)  astigmatism

Question 19

A microscope has an objective lens with an aperture of diameter 0.50 cm where a monochromatic light source of wavelength 580 nm is used to illuminate the object.It is determined that the minimum angle of resolution is 1.13 × 10−4 rad.If the illuminating source were replaced by an violet source of wavelength 420 nm,what would the minimum angle of resolution now become? (1 nm = 10−9 m)

Accepted Answer

A)  1.6 × 10−4 rad 
B)  0.98 × 10−4 rad 
C)  0.81 × 10−4 rad 
D)  0.49 × 10−4 rad 
E)  ​1.13 × 10−4 rad 
A)  1.6 × 10−4 rad 
B)  0.98 × 10−4 rad 
C)  0.81 × 10−4 rad 
D)  0.49 × 10−4 rad 
E)  ​1.13 × 10−4 rad

Question 20

Find the radius of a star image formed on the retina of the eye if the aperture diameter (the pupil)at night is 0.70 cm and the length of the eye is 3.2 cm.Assume the wavelength of starlight in the eye is 500 nm.(1 nm = 10−9 m)

Accepted Answer

A)  2.8 × 10−4 m 
B)  5.6 × 10−4 m 
C)  3.1 × 10−5 m 
D)  2.8 × 10−6 m 
E)  ​3.2 × 10−4 m 
A)  2.8 × 10−4 m 
B)  5.6 × 10−4 m 
C)  3.1 × 10−5 m 
D)  2.8 × 10−6 m 
E)  ​3.2 × 10−4 m

Exam 25: Optical Instruments

When using 545-nm light,how far is the adjustable mirror of a Michelson interferometer moved when 200 fringe shifts are counted?

The 2.4-m diameter Hubble space telescope has been placed into Earth orbit by the space shuttle.Assuming a wavelength of 684 nm,what angular resolution could this telescope achieve by Rayleigh's criterion? (1 nm = 10−9 m)

A camera lens is initially set at f/8 for a shutter speed of 1/250 s.If the amount of lighting on the subject is unchanged,and the lens is set at f/4,what is the proper shutter speed at this setting?

A camera is used to photograph the full moon,which has an angular diameter of 0.53°.The image on the film is 2.3 mm in diameter.What is the focal length of the lens?

An astronomical telescope has an objective lens with focal length fo and has an eyepiece with focal length fe.A second telescope has objective and eyepiece lenses with quadruple the focal length of the first telescope.Which telescope gives the greater magnification and by what factor?

The eye parts iris,retina,cornea,and ciliary muscle,play roles related to ________,________,________,and ________ in a camera.

Even relatively small astronomical telescopes are ordinarily not used for terrestrial observation because:

A magnifying lens with a focal length of 10 cm has what maximum magnification? (Assume the near point is 25 cm).

The Yerkes refracting telescope has a 1-m diameter objective lens of focal length 20 m and an eyepiece of focal length 3.5 cm.What is the magnification of the planet Mars as seen through this telescope?

Tripling the focal length in a telephoto lens,while keeping the aperture size constant,will change the f-number by what factor?

Doubling the focal length of the objective lens of a compound microscope will change the magnification by what factor?

Quadrupling the f-number of a camera lens will change the light intensity admitted to the film by what factor?

A 1.7-m tall woman stands 8.0-m in front of a camera with a 5.0-cm focal length lens.What is the size of the image formed on film?

The Palomar reflecting telescope has a parabolic mirror with an 80 m focal length.What is the magnification achieved when an eyepiece of focal length 2.5 cm is used?

What resolving power must a diffraction grating have in order to distinguish wavelengths of 686.30 nm and 687.50 nm? (1 nm = 10−9 m)

Two thin lenses have powers P1 and P2,measured in diopters.If these lenses are placed in contact with one another,the resulting power is:

A telescope has an objective lens with a focal length of 100 cm and an eyepiece of focal length 3.0 cm.What is the angular magnification of the telescope?

Which term below identifies the eye defect characterized by an inability to see distant objects clearly?

Find the radius of a star image formed on the retina of the eye if the aperture diameter (the pupil)at night is 0.70 cm and the length of the eye is 3.2 cm.Assume the wavelength of starlight in the eye is 500 nm.(1 nm = 10−9 m)

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Nuclear Energy and Elementary Particles: Part A

Particle Collisions, Mediating Photons, and Quark Structures: Exploring the Fundamentals of Physics

The 2.4-m diameter Hubble space telescope has been placed into Earth orbit by the space shuttle.Assuming a wavelength of 684 nm,what angular resolution could this telescope achieve by Rayleigh's criterion? (1 nm = 10−⁹ m)

An astronomical telescope has an objective lens with focal length f_o and has an eyepiece with focal length f_e.A second telescope has objective and eyepiece lenses with quadruple the focal length of the first telescope.Which telescope gives the greater magnification and by what factor?

The eye parts iris,retina,cornea,and ciliary muscle,play roles related to ,,,and in a camera.

What resolving power must a diffraction grating have in order to distinguish wavelengths of 686.30 nm and 687.50 nm? (1 nm = 10−⁹ m)

Two thin lenses have powers P₁ and P₂,measured in diopters.If these lenses are placed in contact with one another,the resulting power is:

Find the radius of a star image formed on the retina of the eye if the aperture diameter (the pupil)at night is 0.70 cm and the length of the eye is 3.2 cm.Assume the wavelength of starlight in the eye is 500 nm.(1 nm = 10−⁹ m)