Question 1

The critical angle for a particular type of glass is 39.0°. What is the index of refraction of the glass?

Accepted Answer

A) 1.52 
B) 1.55 
C) 1.57 
D) 1.59 
E) 1.50 
A) 1.52 
B) 1.55 
C) 1.57 
D) 1.59 
E) 1.50

Question 2

A prism has a vertex angle of 60° and an index of refraction of 1.52. What is the minimum angle of incidence, measured away from the vertex, for a ray of light to emerge from the other side of the prism?

Accepted Answer

A) 25.6° 
B) 38.7° 
C) 29.4° 
D) 32.1° 
E) 33.3° 
A) 25.6° 
B) 38.7° 
C) 29.4° 
D) 32.1° 
E) 33.3°

Question 3

A light ray, traveling obliquely to a concave mirror's axis, crosses the axis at the mirror's center of curvature before striking the mirror's surface. After reflection, this ray

Accepted Answer

A) travels parallel to the mirror's axis. 
B) travels at right angles to the mirror's axis. 
C) passes through the mirror's center of curvature. 
D) passes through the mirror's focal point. 
E) passes through the axis midway between the mirror's focal point and center of curvature. 
A) travels parallel to the mirror's axis. 
B) travels at right angles to the mirror's axis. 
C) passes through the mirror's center of curvature. 
D) passes through the mirror's focal point. 
E) passes through the axis midway between the mirror's focal point and center of curvature.

Question 4

Light enters an equilateral triangle prism in a direction parallel to one side. The prism is made of glass with an index of refraction of 1.52. What is the angle between the incoming ray and the ray that leaves the prism on the other side?

Accepted Answer

A) 83° 
B) 19° 
C) 59° 
D) 27° 
E) 55° 
A) 83° 
B) 19° 
C) 59° 
D) 27° 
E) 55°

Question 5

A beam of light that is parallel to the principal axis is incident on a convex mirror. What happens to the reflected beam of light?

Accepted Answer

A) It also is parallel to the principal axis. 
B) It is perpendicular to the principal axis. 
C) It appears to be coming from the focal point on the other side of the mirror. 
D) It appears to be coming from the center of curvature of the mirror. 
E) It appears to be coming from a point between the focal point and the center of curvature of the mirror. 
A) It also is parallel to the principal axis. 
B) It is perpendicular to the principal axis. 
C) It appears to be coming from the focal point on the other side of the mirror. 
D) It appears to be coming from the center of curvature of the mirror. 
E) It appears to be coming from a point between the focal point and the center of curvature of the mirror.

Question 6

An object is placed 12 cm in front of a curved mirror. The magnification of the image is -3.0. What is the focal length of the mirror?

Accepted Answer

A) 12 cm 
B) 9.0 cm 
C) 24 cm 
D) 36 cm 
E) 16 cm 
A) 12 cm 
B) 9.0 cm 
C) 24 cm 
D) 36 cm 
E) 16 cm

Question 7

A person walks toward a plane mirror at 2.0 ft/s. She is approaching her image in the mirror at a speed of

Accepted Answer

A) 1.0 ft/s. 
B) 3.0 ft/s. 
C) 2.0 ft/s. 
D) 4.0 ft/s. 
E) 5.0 ft/s. 
A) 1.0 ft/s. 
B) 3.0 ft/s. 
C) 2.0 ft/s. 
D) 4.0 ft/s. 
E) 5.0 ft/s.

Question 8

The critical angle for a beam of light passing from water into air is 48.8°. This means that all light rays with an angle of incidence greater than this angle will be

Accepted Answer

A) absorbed. 
B) totally reflected. 
C) partially reflected and partially transmitted. 
D) totally transmitted. 
E) totally polarized. 
A) absorbed. 
B) totally reflected. 
C) partially reflected and partially transmitted. 
D) totally transmitted. 
E) totally polarized.

Question 9

A pool is filled to a depth of 2.0 m. How deep does the pool appear to be from above the water?

Accepted Answer

A) 1.5 m 
B) 1.33 m 
C) -2.0 m 
D) 3.0 m 
E) -1.5 m 
A) 1.5 m 
B) 1.33 m 
C) -2.0 m 
D) 3.0 m 
E) -1.5 m

Question 10

A object is 12 cm in front of a concave mirror, and the image is 3.0 cm in front of the mirror. What is the focal length of the mirror?

Accepted Answer

A) 0.25 cm 
B) 15 cm 
C) 4.0 cm 
D) 2.4 cm 
E) 1.3 cm 
A) 0.25 cm 
B) 15 cm 
C) 4.0 cm 
D) 2.4 cm 
E) 1.3 cm

Question 11

A concave mirror with a radius of 20 cm creates a real image 30 cm from the mirror. What is the object distance?

Accepted Answer

A) 50 cm 
B) 20 cm 
C) 15 cm 
D) 7.5 cm 
E) 5.0 cm 
A) 50 cm 
B) 20 cm 
C) 15 cm 
D) 7.5 cm 
E) 5.0 cm

Question 12

The critical angle for glass in air if the glass has index of refraction 1.50 is

Accepted Answer

A) 41.8°. 
B) 85.9°. 
C) 56.3°. 
D) 90°. 
E) 48.1°. 
A) 41.8°. 
B) 85.9°. 
C) 56.3°. 
D) 90°. 
E) 48.1°.

Question 13

The condition for total internal reflection can be predicted from Snell's law since

Accepted Answer

A) the index of refraction of glass is about 1.5. 
B) the index of refraction of plastic is about 1.5. 
C) the value of tangent can be 1.0. 
D) the maximum value of the sine is 1.0. 
E) the maximum value of the sine is 1.5. 
A) the index of refraction of glass is about 1.5. 
B) the index of refraction of plastic is about 1.5. 
C) the value of tangent can be 1.0. 
D) the maximum value of the sine is 1.0. 
E) the maximum value of the sine is 1.5.

Question 14

A spherical mirror has a radius of curvature of 22 cm. If the mirror is convex, its focal length is

Accepted Answer

A) -11 cm. 
B) -44 cm. 
C) 22 cm. 
D) 11 cm. 
E) -22 cm. 
A) -11 cm. 
B) -44 cm. 
C) 22 cm. 
D) 11 cm. 
E) -22 cm.

Question 15

A mirror is rotated at an angle of 10° from its original position. How much is the rotation of the angle of reflection?

Accepted Answer

A) 10° 
B) 5° 
C) 15° 
D) 20° 
E) 40° 
A) 10° 
B) 5° 
C) 15° 
D) 20° 
E) 40°

Question 16

A light ray in water passes into air. The angle of incidence in the water is 40°. What is the angle of refraction in air if the index of refraction of water is 1.33?

Accepted Answer

A) 59° 
B) 0.59° 
C) 40° 
D) 1.33° 
E) 29° 
A) 59° 
B) 0.59° 
C) 40° 
D) 1.33° 
E) 29°

Question 17

An object is placed in front of a convex mirror at a distance closer than the focal length of the mirror. The image will appear

Accepted Answer

A) behind the mirror. 
B) upright and reduced. 
C) upright and enlarged. 
D) inverted and reduced. 
E) inverted and enlarged. 
A) behind the mirror. 
B) upright and reduced. 
C) upright and enlarged. 
D) inverted and reduced. 
E) inverted and enlarged.

Question 18

If the image distance is negative, the image formed by a mirror is a(n)

Accepted Answer

A) real image. 
B) virtual image. 
C) imaginary image. 
D) positive image. 
E) negative image. 
A) real image. 
B) virtual image. 
C) imaginary image. 
D) positive image. 
E) negative image.

Question 19

Which color of light undergoes the smallest refraction when passing from air to glass?

Accepted Answer

A) red 
B) yellow 
C) green 
D) violet 
E) blue. 
A) red 
B) yellow 
C) green 
D) violet 
E) blue.

Question 20

A beam of light that is parallel to the principal axis is incident on a concave mirror. What happens to the reflected beam of light?

Accepted Answer

A) It also is parallel to the principal axis. 
B) It is perpendicular to the principal axis. 
C) It passes through the center of curvature of the mirror. 
D) It passes through the focal point of the mirror. 
E) It passes between the focal point and the center of curvature of the mirror. 
A) It also is parallel to the principal axis. 
B) It is perpendicular to the principal axis. 
C) It passes through the center of curvature of the mirror. 
D) It passes through the focal point of the mirror. 
E) It passes between the focal point and the center of curvature of the mirror.

Exam 32: Light: Reflection and Refraction

The critical angle for a particular type of glass is 39.0°. What is the index of refraction of the glass?

A prism has a vertex angle of 60° and an index of refraction of 1.52. What is the minimum angle of incidence, measured away from the vertex, for a ray of light to emerge from the other side of the prism?

A light ray, traveling obliquely to a concave mirror's axis, crosses the axis at the mirror's center of curvature before striking the mirror's surface. After reflection, this ray

Light enters an equilateral triangle prism in a direction parallel to one side. The prism is made of glass with an index of refraction of 1.52. What is the angle between the incoming ray and the ray that leaves the prism on the other side?

A beam of light that is parallel to the principal axis is incident on a convex mirror. What happens to the reflected beam of light?

An object is placed 12 cm in front of a curved mirror. The magnification of the image is -3.0. What is the focal length of the mirror?

A person walks toward a plane mirror at 2.0 ft/s. She is approaching her image in the mirror at a speed of

The critical angle for a beam of light passing from water into air is 48.8°. This means that all light rays with an angle of incidence greater than this angle will be

A pool is filled to a depth of 2.0 m. How deep does the pool appear to be from above the water?

A object is 12 cm in front of a concave mirror, and the image is 3.0 cm in front of the mirror. What is the focal length of the mirror?

A concave mirror with a radius of 20 cm creates a real image 30 cm from the mirror. What is the object distance?

The critical angle for glass in air if the glass has index of refraction 1.50 is

The condition for total internal reflection can be predicted from Snell's law since

A spherical mirror has a radius of curvature of 22 cm. If the mirror is convex, its focal length is

A mirror is rotated at an angle of 10° from its original position. How much is the rotation of the angle of reflection?

A light ray in water passes into air. The angle of incidence in the water is 40°. What is the angle of refraction in air if the index of refraction of water is 1.33?

An object is placed in front of a convex mirror at a distance closer than the focal length of the mirror. The image will appear

If the image distance is negative, the image formed by a mirror is a(n)

Which color of light undergoes the smallest refraction when passing from air to glass?

A beam of light that is parallel to the principal axis is incident on a concave mirror. What happens to the reflected beam of light?

Introduction, Measurement, Estimating

Describing Motion: Kinematics in One Dimension

Kinematics in Two or Three Dimensions; Vectors

Dynamics: Newtons Laws of Motion

Using Newtons Laws: Friction, Circular Motion, Drag Forces

Gravitation and Newtons6 Synthesis

Work and Energy

Conservation of Energy

Linear Momentum

Rotational Motion

Angular Momentum; General Rotation

Static Equilibrium; Elasticity and Fracture

Fluids

Oscillations

Wave Motion

Sound

Temperature, Thermal Expansion, and the Ideal Gas Law

Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge and Electric Field

Gausss Law

Electric Potential

Capacitance, Dielectrics, Electric Energy Storage

Electric Currents and Resistance

Dc Circuits

Magnetism

Sources of Magnetic Field

Electromagnetic Induction and Faradays Law

Inductance, Electromagnetic Oscillations, and Ac Circuits

Maxwells Equations and Electromagnetic Waves

Lenses and Optical Instruments

The Wave Nature of Light; Interference

Diffraction and Polarization

Special Theory of Relativity

Early Quantum Theory and Models of the Atom

Quantum Mechanics

Quantum Mechanics of Atoms

Molecules and Solids

Nuclear Physics and Radioactivity

Nuclear Energy: Efects and Uses of Radiation

Elementary Particle

Astrophysics and Cosmology

Filters