For vibrational motion, what term denotes the maximum displacement from the equilibrium position?
answer
Amplitude
question
A mass is attached to a vertical spring. The mass exhibits simple harmonic motion between points A and B. Which of the following statements are true?
answer
- The mass is located midway between points A and B when its kinetic energy is at maximum.
- The mass is located at either point A or B when its kinetic energy is at minimum.
question
A simple pendulum consists of a point mass suspended by a weightless, rigid wire in a uniform gravitation field. Which of the following statements are true when the system undergoes small oscillations?
answer
The period is independent of the suspended mass.
question
A horn produces sound with frequency f0. Let the frequency you hear when you are at rest and the horn moves toward you with a speed u be f1 ; let the frequency you hear when the horn is at rest and you move toward it with a speed u be f2. Is f1 greater than, less than, or equal to f2? Why?
answer
Greater than. A moving source causes the wave crests to "bunch up," leading to a higher frequency than for a moving observer.
question
Two wave pulses pass each other on a string. The pulse traveling toward the right has positive amplitude, whereas the pulse traveling toward the left has equal amplitude in the negative direction. What happens when they occupy the same region of space at the same time?
answer
Destructive interference occurs.
question
For a wave, what term is defined as the distance between two successive crests or two successive troughs?
answer
Wavelength
question
The frequency of a wave increases. If the speed of the wave remains constant, what happens to the distance between successive crests?
answer
The distance between successive crests decreases.
question
A standing wave is established on a string that is fixed at both ends. If the string is vibrating at its fundamental frequency, how is the length of the string related to the wavelength of the standing wave?
answer
The length of the string is equal to one-half of a wavelength.
question
Which of the following statements are true for an image formed by a plane mirror when the object is placed in front of the mirror?
answer
- The image always appears to be located the same distance behind the mirror as the object is located in front of the mirror.
- The image formed by a plane mirror is always a virtual image.
- The image formed by a plane mirror is always an upright image.
question
Which of the following statements are true concerning sign conventions for image formation?
answer
- For an upright image, the magnification is positive; for an inverted image, the magnification is negative.
- When the object is on the same side of the reflecting or refracting surface as the incoming light, the object distance is positive; otherwise, it is negative.
- When the center of curvature of a spherical mirror is on the same side as the reflected light, the radius of curvature is positive; otherwise, it is negative.
question
Suppose a ray of light traveling in a material with an index of refraction na reaches an interface with a material having an index of refraction nb. Which of the following statements must be true for total internal reflection to occur?
answer
- The angle of incidence must be greater than the critical angle.
- na > nb
question
Is the image you see in a three-dimensional corner reflector upright or inverted?
answer
Inverted
question
Which of the following statements are true for images formed by spherical mirrors?
answer
- A convex mirror always produces an upright image of an object placed in front of it.
- A convex mirror always produces a virtual image of an object placed in front of it.
question
What can one say about the image produced by a thin lens that produces a positive magnification?
answer
It is virtual and erect
question
If the diameter of a lens is reduced, what happens to the magnification produced by the lens?
answer
It is unchanged.
question
You have two lenses: lens 1 with a focal length of 0.45 cm and lens 2 with a focal length of 1.9 cm. If you construct a microscope with these lenses, which one should you use as the objective?
answer
we should pick the 0.45-cm lens to be the objective bc when constructing a microscope you want the smaller focal length to be the objective and the larger focal length to be the eye piece.
question
Which of the following statements are true concerning the eye?
answer
- Nearsightedness can be corrected with a diverging lens.
- Astigmatism refers to a defect in which the surface of the cornea is not spherical. Instead, it is more sharply curved in one plane than another
- The far point of the normal eye is infinity.
question
Which of the following statements are true concerning compound microscopes?
answer
- In a compound microscope, the final image is a virtual image.
- In a compound microscope, the image formed by the objective lens is a real image.
question
A police detective discovers eyeglasses with a focal length of − 90.0 cm at a crime scene. If the eyeglasses belong to the suspect, is the suspect nearsighted or farsighted? A search of a person's home reveals an eyeglass prescription of − 0.75 diopter. Is the person the suspect?
answer
- Nearsighted
- No
Haven't found what you need?
Search for quizzes and test answers now
Quizzes.studymoose.com uses cookies. By continuing you agree to our cookie policy
