Question 1

A concave mirror having a focal length of magnitude 5.0 cm forms an image 4.0 cm behind the mirror. Where is the object for this image?

Accepted Answer

A)  2.2 cm behind the mirror 
B)  2.2 cm in front of the mirror 
C)  1.0 cm behind the mirror 
D)  9.0 cm in front of the mirror 
E)  20 cm behind the mirror 
A)  2.2 cm behind the mirror 
B)  2.2 cm in front of the mirror 
C)  1.0 cm behind the mirror 
D)  9.0 cm in front of the mirror 
E)  20 cm behind the mirror

Question 2

A double-convex thin glass lens has equal-magnitude radii of curvature. The focal length of the Iens is $+ 37.3 \mathrm {~cm}$ and the index of refraction of the glass is $1.52$. What is the magnitude of the radius of curvature of each convex surface?

Accepted Answer

A)  $31 \mathrm {~cm}$ 
B)  $46 \mathrm {~cm}$ 
C)  $35 \mathrm {~cm}$ 
D)  $43 \mathrm {~cm}$ 
E)  $39 \mathrm {~cm}$ 
A)  $31 \mathrm {~cm}$ 
B)  $46 \mathrm {~cm}$ 
C)  $35 \mathrm {~cm}$ 
D)  $43 \mathrm {~cm}$ 
E)  $39 \mathrm {~cm}$

Question 3

A beam of light in water (of refractive index of $1.33$ ) enters a glass slab (of refractive index $1.50$ ) at an angle of incidence of $60.0 ^ { \circ }$. What is the angle of refraction in the glass?

Accepted Answer

A)  $90.0 ^ { \circ }$ 
B)  $60.0 ^ { \circ }$ 
C)  $39.8 ^ { \circ }$ 
D)  $50.2 ^ { \circ }$ 
E)  $27.5 ^ { \circ }$ 
A)  $90.0 ^ { \circ }$ 
B)  $60.0 ^ { \circ }$ 
C)  $39.8 ^ { \circ }$ 
D)  $50.2 ^ { \circ }$ 
E)  $27.5 ^ { \circ }$

Question 4

A thin flashlight beam traveling in air strikes a glass plate at an angle of $52 ^ { \circ }$ with the plane of the surface of the plate. If the index of refraction of the glass is $1.4$, what angle will the beam make with the normal in the glass?

Accepted Answer

A)  $26 ^ { \circ }$ 
B)  $38 ^ { \circ }$ 
C)  $56 ^ { \circ }$ 
D)  $34 ^ { \circ }$ 
E)  $64 ^ { \circ }$ 
A)  $26 ^ { \circ }$ 
B)  $38 ^ { \circ }$ 
C)  $56 ^ { \circ }$ 
D)  $34 ^ { \circ }$ 
E)  $64 ^ { \circ }$

Question 5

Tan's face is 20 cm in front of a concave shaving mirror. If he observes his image to be twice as big and upright, what is the focal length of the mirror?

Accepted Answer

A)  40 cm 
B)  10 cm 
C)  -50 cm 
D)  50 cm 
E)  -40 cm 
A)  40 cm 
B)  10 cm 
C)  -50 cm 
D)  50 cm 
E)  -40 cm

Question 6

Single convex spherical mirrors produce images that

Accepted Answer

A)  are always smaller than the actual object. 
B)  are always larger than the actual object. 
C)  are sometimes real. 
D)  could be larger than, smaller than, or the same size as the actual object, depending on the placement of the object. 
E)  are always the same size as the actual object. 
A)  are always smaller than the actual object. 
B)  are always larger than the actual object. 
C)  are sometimes real. 
D)  could be larger than, smaller than, or the same size as the actual object, depending on the placement of the object. 
E)  are always the same size as the actual object.

Question 7

A tank holds a layer of oil, of thickness $T _ { \mathrm { O } } = 1.65 \mathrm {~m}$, that floats on a layer of syrup of thickness $T _ { \mathrm { S } } =$ $0.830 \mathrm {~m}$, as shown in the figure. Both liquids are clear and do not mix together. A light ray, originating at the bottom of the tank at point $P$, crosses the oil-syrup interface at a point $0.900 \mathrm {~m}$ from the axis. The ray continues and arrives at the oil-air interface, $2.00 \mathrm {~m}$ to the right of $P$ and at the critical angle. What is the index of refraction of the syrup?

Accepted Answer

A)  $1.54$ 
B)  $1.94$ 
C)  $1.25$ 
D)  $1.75$ 
E)  $1.36$ 
A)  $1.54$ 
B)  $1.94$ 
C)  $1.25$ 
D)  $1.75$ 
E)  $1.36$

A concave mirror having a focal length of magnitude 5.0 cm forms an image 4.0 cm behind the mirror. Where is the object for this image?

A double-convex thin glass lens has equal-magnitude radii of curvature. The focal length of the Iens is $+ 37.3 \mathrm {~cm}$ and the index of refraction of the glass is $1.52$ . What is the magnitude of the radius of curvature of each convex surface?

A beam of light in water (of refractive index of $1.33$ ) enters a glass slab (of refractive index $1.50$ ) at an angle of incidence of $60.0 ^ { \circ }$ . What is the angle of refraction in the glass?

A thin flashlight beam traveling in air strikes a glass plate at an angle of $52 ^ { \circ }$ with the plane of the surface of the plate. If the index of refraction of the glass is $1.4$ , what angle will the beam make with the normal in the glass?

Tan's face is 20 cm in front of a concave shaving mirror. If he observes his image to be twice as big and upright, what is the focal length of the mirror?

Single convex spherical mirrors produce images that

Introduction, Measurement, Estimating

Describing Motion: Kinematics in One Dimension

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Exam 22: Electromagnetic Waves

A concave mirror having a focal length of magnitude 5.0 cm forms an image 4.0 cm behind the mirror. Where is the object for this image?

A double-convex thin glass lens has equal-magnitude radii of curvature. The focal length of the Iens is +37.3 cm+ 37.3 \mathrm {~cm}+37.3 cm and the index of refraction of the glass is 1.521.521.52 . What is the magnitude of the radius of curvature of each convex surface?

A beam of light in water (of refractive index of 1.331.331.33 ) enters a glass slab (of refractive index 1.501.501.50 ) at an angle of incidence of 60.0∘60.0 ^ { \circ }60.0∘ . What is the angle of refraction in the glass?

A thin flashlight beam traveling in air strikes a glass plate at an angle of 52∘52 ^ { \circ }52∘ with the plane of the surface of the plate. If the index of refraction of the glass is 1.41.41.4 , what angle will the beam make with the normal in the glass?

Tan's face is 20 cm in front of a concave shaving mirror. If he observes his image to be twice as big and upright, what is the focal length of the mirror?

Single convex spherical mirrors produce images that

Introduction, Measurement, Estimating

Describing Motion: Kinematics in One Dimension

Kinematics in Two Dimensions; Vectors

Dynamics: Newtons Laws of Motion

Circular Motion; Gravitation

Work and Energy

Linear Momentum

Rotational Motion

Static Equilibrium; Elasticity and Fracture

Fluids

Oscillations and Waves

Sound

Temperature and Kinetic Theory

Heat

The Laws of Thermodynamics

Electric Charge and Electric Field

Electric Potential

Electric Currents

Dc Circuits

Magnetism

Electromagnetic Induction and Faradays Law

Light: Geometric Optics

The Wave Nature of Light

Optical Instruments

The Special Theory of Relativity

Early Quantum Theory and Models of the Atom

Quantum Mechanics of Atoms

Molecules and Solids

Nuclear Physics and Radioactivity

Nuclear Energy; Effects and Uses of Radiation

Elementary Particles

Astrophysics and Cosmology

Filters

A double-convex thin glass lens has equal-magnitude radii of curvature. The focal length of the Iens is $+ 37.3 \mathrm {~cm}$ and the index of refraction of the glass is $1.52$ . What is the magnitude of the radius of curvature of each convex surface?

A beam of light in water (of refractive index of $1.33$ ) enters a glass slab (of refractive index $1.50$ ) at an angle of incidence of $60.0 ^ { \circ }$ . What is the angle of refraction in the glass?

A thin flashlight beam traveling in air strikes a glass plate at an angle of $52 ^ { \circ }$ with the plane of the surface of the plate. If the index of refraction of the glass is $1.4$ , what angle will the beam make with the normal in the glass?