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# Multiple choice question set in Physics

1. The study of forces in equilibrium is called:
(a) statics
(b) traction
(c) medium
(d) angular velocity

2. The first condition for equilibrium: the sum of all forces is:
(a) 100
(b) 50
(c) 1
(d) 0

3. The second condition for equilibrium, the sum of all lS zero.
(a) forces
(b) torque
(c) momentum
(d) vectors

If an object is displaced slightly and returns to its original position, it is said to be m:
(a) unstable equilibrium
(b) neutral equilibrium
(c) stable equilibrium
(d) kinetic equilibrium

If a force is applied to an object, the length of the object changes. This is an example of:
(a) Newton's law
(b) Hooke's law
( c) Galileo' slaw
(d) Henry's law

The change in length of an object is directly proportional to the product of the object's length and the force per unit area. It is general practice to define the force per unit area as the:
(a) stress
(b) strain
(c) tensile
(d) elastic modulus

The three types of stress for rigid bodies are:
(a) tension
(b) bulk
(c) compression (
d) strain
(e) shear

Whereas an arch spans a two-dimensional space, an arch rotated about a vertical axIS IS:
(a) cover
(b) canopy
(c) dome
(d) ceiling

An object who volume changes as a result of pressure on all sides is:
(a) Young's modulus
(b) Elastic modulus
(c) Shear modulus
(d) Bulk modulus

Defined as the ratio of the change in length to the original length is:
(a) stress
(b) strain
(c) modulus
(d) shear

A state of matter which occurs only at very high temperatures and consists of ionized atoms is:
(a) gas
(b) fluid
(c) plasma
(d) liquid

Mass per unit volume is:
(a) density
(b) pascal
(c) humidity
(d) fluid

Pressure applied to a confined fluid increases the pressure throughout by the same amount is:
(a) Hooke's principle
(b) Pascal's principle
(c) Newton' principle
(d) Archimedes' principle

The buoyant force on a body immersed in a fluid is equal to the weight of the fluid displaced by that object is:
(a) Pascal's principle
(b) Archimedes' principle
(c) Hooke's principle
(d) Bernoulli's principle

If fluid flow is smooth, such that the neighboring layers ofthe fluid slide by each other, the flow is said to be:
(a) laminar
(b) turbulent
(c) viscose
(d) dynamic

Where the velocity of a fluid is high, the pressure is low, and where the velocity is low, the pressure is high. This is:
(a) Archimedes' principle
(b) Bernoulli's principle
(c) Pascal's principle
(d) Hooke's principle

A pipe with a narrow constriction that causes the air to speed up is:
(a) venturi tube
(b) hydrometer
(c) anemeter
(d) dynamic tube

Real fluids have a certain amount ofintemal friction called:
(a) plasma
(b) turbulent
(c) laminar
(d) viscosity

In tubes having very small diameters, liquids are observed to rise or fall relative to the level of the surrounding liquid. This phenomenon is called:
(a) viscosity
(b) plasma
(c) capillarity
(d) veinous

Pumps can be classified into categories according to their function. The heart is a:
(a) vacuum pump
(b) force pump
(c) circulating pump
(d) viscous pump

When a vibration or an oscillation repeats itself, back and forth, over the same path, the motion is:
(a) periodic
(b) harmonic
(c) frequency
d) period

In vibrational motion, the maximum displacement, the greatest distance from the equilibrium point is called the:
(a) period
(b) frequency
(c) amplitude
(d) decibel

A small object suspended from the end of a lightweight cord is a:
(a) simple lever
(b) simple pendulum
(c) simple oscillator
(d) simple fulcrum

The amplitude of any real oscillating spring or pendulum slowly decreases in time until the oscillations stop altogether. This is called:
(a) damping
(b) retarding
(c) resisting
(d) resonance

When a wave travels down a rope, say from left to right, the particles of the rope vibrate up and down in a direction perpendicular to the motion itself. This is a:
(a) longitudinal wave
(b) periodic wave
(c) reflective wave
(d) transverse wave

Power transported across unit area perpendicular to the direction of energy flow IS:
(a) frequency
(b) amplitude
(c) refraction
(d) intensity

What happens when to waves pass through the same region at the same time IS called:
(a) reflection
(b) interference
(c) incidence
(d) intensity

The frequencies at which standing waves are produced are called:
(a) natural
(b) node
(c) antinode
(d) unnatural

When any wave strikes a boundary, some of the energy is transmitted or absorbed. When a two or three dimensional wave is traveling in one medium crosses a boundary into a medium where its velocity is different, the transmitted wave may move in a different direction than the incident wave. This phenomena is called:
(a) reflection
(b) interference
(c) refraction
(d) diffraction

Waves spread as they travel, and when they encounter an obstacle they bend around it somewhat and pass into the region behind. This phenomena is called:
(a) reflection
(b) interference
(c) refraction
(d) diffraction

Energy transported by a wave per unit time across unit area is the definition as:
(a) intensity
(b) loudness
(c) decibel
(d) frequency

The intensity level of sound is expressed as:
(a) pounds
(b) decibels
(c) hertz
(d) period

When a source of sound is moving toward an observer, the pitch is higher and when the source is traveling away from the observer, the pitch is lower. This phenomenon is called:
(a) Beat effect
(b) Doppler effect
(c) Decibel effect
(d) Sound effect

What color has the lowest frequency of visible light?
(a) green
(b) blue
(c) red
(d) yellow

An object traveling faster than the speed of sound is given a number called:
(a) Doppler
(b) Beat
(c) Decibel
(d) Mach

Sonar generally makes use of frequencies greater than 20kHz. These are called:
(a) ultrasound
(b) infrasound
(c) sound
(d) noise

The diagnostic use of ultrasound in medicine is more complicated and very interesting application of physical principles. A technique much like sonar used is called:
(a) echo
(b) pulse-echo
(c) pulse
(d) reverberate

The audible range of the human ear is:
(a) 500 to 400 Hz
(b) 20 to 20,000 Hz (c) 10 to 4000 Hz
(d) 100 to 500 Hz

Longitudinal waves are often called:
(a) loudness waves
(b) ultrasonic waves
(c) pressure waves
(d) decibel waves

The physical sensation that stimulates our ears: namely, longitudinal waves is called:
(a) vibration
(b) intensity
(c) amplitude
(d) sound

#### Solution Preview

1. The study of forces in equilibrium is called:
(a) statics

2. The first condition for equilibrium: the sum of all forces is:
(d) 0

3. The second condition for equilibrium, the sum of all lS zero.
(b) torque

If an object is displaced slightly and returns to its original position, it is said to be m:
(c) stable equilibrium

If a force is applied to an object, the length of the object changes. This is an example of:
(b) Hooke's law

The change in length of an object is directly proportional to the product of the object's length and the force per unit area. It is general practice to define the force per unit area as the:
(d) elastic modulus

The three types of stress for rigid bodies are:
(b) bulk
(c) compression
(e) shear

Whereas an arch spans a two-dimensional space, an arch rotated about a vertical axIS IS:
(c) dome

An object who volume changes as a result of pressure on all sides is:
bulk modulus describes the material's response to uniform pressure
(d) Bulk modulus

Defined as the ratio of the change in length to the original length is:
(b) strain

A state of matter which occurs only at very high temperatures and consists of ionized atoms is:
(c) plasma

Mass per unit volume is:
(a) density

Pressure applied to a confined fluid increases ...

#### Solution Summary

Solution of all asked problems. A good set of reference.

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