Question 1

The purpose of prescription glasses for a near-sighted person is to bring the apparent positions of distant objects:

Accepted Answer

A) to the far point of the eye 
B) to the near point of the eye 
C) to the retina of the eye 
D) none of the above 
A) to the far point of the eye 
B) to the near point of the eye 
C) to the retina of the eye 
D) none of the above

Question 2

A dentist uses a concave mirror (focal length 2 cm) to examine some teeth.If the distance from the object to the mirror is 1 cm, what is the magnification of the tooth?

Accepted Answer

A) 6 
B) 1 
C) 4 
D) 2 
E) 1.5 
A) 6 
B) 1 
C) 4 
D) 2 
E) 1.5

Question 3

An object 15 cm high is placed 15 cm in front of a convex mirror with a focal length of-10 cm.What is the image height (in cm)?

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 8 
E) 30 
A) 2 
B) 4 
C) 6 
D) 8 
E) 30

Question 4

A concave mirror has a focal length of 20 cm.What is the position (in cm) of the object if the image is upright and is two times larger than the object?

Accepted Answer

A) 30 
B) 20 
C) 10 
D) 40 
E) 60 
A) 30 
B) 20 
C) 10 
D) 40 
E) 60

Question 5

A plane convex lens is made of glass (n = 1.5) with one flat surface and the other having a radius of 20 cm.What is the focal length (in cm) of the lens?

Accepted Answer

A) 20 
B) 30 
C) 40 
D) 10 
E) 50 
A) 20 
B) 30 
C) 40 
D) 10 
E) 50

The purpose of prescription glasses for a near-sighted person is to bring the apparent positions of distant objects:

A dentist uses a concave mirror (focal length 2 cm) to examine some teeth.If the distance from the object to the mirror is 1 cm, what is the magnification of the tooth?

An object 15 cm high is placed 15 cm in front of a convex mirror with a focal length of-10 cm.What is the image height (in cm)?

A concave mirror has a focal length of 20 cm.What is the position (in cm) of the object if the image is upright and is two times larger than the object?

A plane convex lens is made of glass (n = 1.5) with one flat surface and the other having a radius of 20 cm.What is the focal length (in cm) of the lens?

Electric Fields

Gausss Law

Electric Potential

Energy and Capacitance

Current and Resistance

Direct-Current Circuits

Magnetic Fields

Magnetic Forces

Faradays Law

Inductance

Alternating-Current Circuits

Electromagnetic Waves

The Nature of Light and the Principles of Ray Optics

Wave Optics

Diffraction Patterns and Polarisation

Quantisation and Wave-Particle Duality

Introduction to Quantum Mechanics

Atomic Physics

Quantum Physics of Molecules and Solids

Nuclei and Radioactivity

Particle Physics

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Exam 14: Image Formation

The purpose of prescription glasses for a near-sighted person is to bring the apparent positions of distant objects:

A dentist uses a concave mirror (focal length 2 cm) to examine some teeth.If the distance from the object to the mirror is 1 cm, what is the magnification of the tooth?

An object 15 cm high is placed 15 cm in front of a convex mirror with a focal length of-10 cm.What is the image height (in cm)?

A concave mirror has a focal length of 20 cm.What is the position (in cm) of the object if the image is upright and is two times larger than the object?

A plane convex lens is made of glass (n = 1.5) with one flat surface and the other having a radius of 20 cm.What is the focal length (in cm) of the lens?

Electric Fields

Gausss Law

Electric Potential

Energy and Capacitance

Current and Resistance

Direct-Current Circuits

Magnetic Fields

Magnetic Forces

Faradays Law

Inductance

Alternating-Current Circuits

Electromagnetic Waves

The Nature of Light and the Principles of Ray Optics

Wave Optics

Diffraction Patterns and Polarisation

Quantisation and Wave-Particle Duality

Introduction to Quantum Mechanics

Atomic Physics

Quantum Physics of Molecules and Solids

Nuclei and Radioactivity

Particle Physics

Filters