Question 1

Assuming the frequency remains constant,a monochromatic light ray is transmitted through an glass-to-air boundary,what happens to the wavelength?

Accepted Answer

A)  decreases 
B)  approaches zero value 
C)  increases 
D)  remains unchanged 
A)  decreases 
B)  approaches zero value 
C)  increases 
D)  remains unchanged

Question 2

If a virtual image is formed along the principal axis 15 cm from a concave mirror with the focal length 15 cm,what is the object distance from the mirror?

Accepted Answer

A)  6.0 cm 
B)  10 cm 
C)  30 cm 
D)  7.5 cm 
A)  6.0 cm 
B)  10 cm 
C)  30 cm 
D)  7.5 cm

Question 3

A fiber optic cable (n = 1.40)is submerged in water (n = 1.33).What is the critical angle for light to stay inside the cable?

Accepted Answer

A)  71.8° 
B)  27.6° 
C)  62.5° 
D)  41.8° 
A)  71.8° 
B)  27.6° 
C)  62.5° 
D)  41.8°

Question 4

A monochromatic light source emits a wavelength of 490 nm in air.When passing through a liquid,the wavelength reduces to 389 nm.What is the liquid's index of refraction?

Accepted Answer

A)  1.26 
B)  1.33 
C)  1.14 
D)  1.49 
A)  1.26 
B)  1.33 
C)  1.14 
D)  1.49

Question 5

A concave mirror forms a real image at 25.0 cm from the mirror surface along the principal axis.If the corresponding object is at a 20.0-cm distance,what is the mirror's focal length?

Accepted Answer

A)  1.43 cm 
B)  16.7 cm 
C)  7.14 cm 
D)  11.1 cm 
A)  1.43 cm 
B)  16.7 cm 
C)  7.14 cm 
D)  11.1 cm

Question 6

Which of the lens shapes given below results in a diverging lens?

Accepted Answer

A)  plano concave 
B)  double convex 
C)  convex meniscus 
D)  None of the shapes listed will be diverging. 
A)  plano concave 
B)  double convex 
C)  convex meniscus 
D)  None of the shapes listed will be diverging.

Question 7

An object,located 90 cm from a concave lens,forms an image 30 cm from the lens on the same side as the object.What is the focal length of the lens?

Accepted Answer

A)  −150 cm 
B)  −45 cm 
C)  −36 cm 
D)  −180 cm 
A)  −150 cm 
B)  −45 cm 
C)  −36 cm 
D)  −180 cm

Question 8

A beam of light in air is incident at an angle of 46° to the surface of a rectangular block of clear plastic (n = 1.46).The light beam first passes through the block and re-emerges from the opposite side into air at what angle to the normal to that surface?

Accepted Answer

A)  23° 
B)  59° 
C)  46° 
D)  30° 
A)  23° 
B)  59° 
C)  46° 
D)  30°

Question 9

An object is placed 10 cm in front of a mirror,and an image is formed that has a magnification of 2.5.Which of the following statements is true?

Accepted Answer

A)  This is the only true statement. 
B)  The focal length of the mirror is 30 cm. 
C)  The image is real. 
D)  The image is inverted. 
A)  This is the only true statement. 
B)  The focal length of the mirror is 30 cm. 
C)  The image is real. 
D)  The image is inverted.

Question 10

If an optical system consists only of an object and a single convex mirror,

Accepted Answer

A)  the image will sometimes be inverted. 
B)  the magnification will sometimes have an absolute value greater than 1. 
C)  the image distance will never be negative. 
D)  the image will always be virtual. 
A)  the image will sometimes be inverted. 
B)  the magnification will sometimes have an absolute value greater than 1. 
C)  the image distance will never be negative. 
D)  the image will always be virtual.

Question 11

A liquid has an index of refraction of 1.33.What is the speed of light through it? (c = 3.00 × 108 m/s)

Accepted Answer

A)  3.99 × 108 m/s 
B)  2.26 × 108 m/s 
C)  4.46 × 108 m/s 
D)  2.04 × 108 m/s 
A)  3.99 × 108 m/s 
B)  2.26 × 108 m/s 
C)  4.46 × 108 m/s 
D)  2.04 × 108 m/s

Exam 24: Wave Optics: Part A

Assuming the frequency remains constant,a monochromatic light ray is transmitted through an glass-to-air boundary,what happens to the wavelength?

If a virtual image is formed along the principal axis 15 cm from a concave mirror with the focal length 15 cm,what is the object distance from the mirror?

A fiber optic cable (n = 1.40)is submerged in water (n = 1.33).What is the critical angle for light to stay inside the cable?

A monochromatic light source emits a wavelength of 490 nm in air.When passing through a liquid,the wavelength reduces to 389 nm.What is the liquid's index of refraction?

A concave mirror forms a real image at 25.0 cm from the mirror surface along the principal axis.If the corresponding object is at a 20.0-cm distance,what is the mirror's focal length?

Which of the lens shapes given below results in a diverging lens?

An object,located 90 cm from a concave lens,forms an image 30 cm from the lens on the same side as the object.What is the focal length of the lens?

A beam of light in air is incident at an angle of 46° to the surface of a rectangular block of clear plastic (n = 1.46).The light beam first passes through the block and re-emerges from the opposite side into air at what angle to the normal to that surface?

An object is placed 10 cm in front of a mirror,and an image is formed that has a magnification of 2.5.Which of the following statements is true?

If an optical system consists only of an object and a single convex mirror,

A liquid has an index of refraction of 1.33.What is the speed of light through it? (c = 3.00 × 108 m/s)

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

Optical Instruments

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

Filters

A liquid has an index of refraction of 1.33.What is the speed of light through it? (c = 3.00 × 10⁸ m/s)