The characteristic that distinguishes a laser beam from an ordinary light beam is: w) the greater frequency of the laser beam x) the coherence of the laser beam y) the color of the laser beam z) the greater polarization of the laser beam

The characteristic that distinguishes a laser beam from an ordinary light beam is: w) the greater frequency of the laser beam x) the coherence of the laser beam y) the color of the laser beam z) the greater polarization of the laser beam
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ANSWER: X -- THE COHERENCE OF THE LASER BEAM
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The characteristic that distinguishes a laser beam from an ordinary light beam is: A. The greater frequency of the laser beam B. The coherence of the laser beam C. The color of the laser beam D. The greater polarization of the laser beam

Description : The characteristic that distinguishes a laser beam from an ordinary light beam is: A. The greater frequency of the laser beam B. The coherence of the laser beam C. The color of the laser beam D. The greater polarization of the laser beam

Last Answer : B. The coherence of the laser beam

When a beam of ordinary white light is passed through a Polaroid plate filter, the intensity of the beam that emerges is: w) equal to that of the incident beam x) about 0.9 that of the incident beam y) about one-half that of the incident beam z) practically zero

Description : When a beam of ordinary white light is passed through a Polaroid plate filter, the intensity of the beam that emerges is: w) equal to that of the incident beam x) about 0.9 that of the incident beam y) about one-half that of the incident beam z) practically zero

Last Answer : ANSWER: Y -- ABOUT ONE-HALF THAT OF THE INCIDENT BEAM 

Laser radiation is: w) monochromatic x) directed in a narrow beam y) produced with large power densities z) all of the above

Description : Laser radiation is: w) monochromatic x) directed in a narrow beam y) produced with large power densities z) all of the above

Last Answer : ANSWER: Z -- ALL OF THE ABOVE

Diffraction and interference demonstrate which of the following? w) particle nature of light x) wave nature of light y) polarization of light z) refraction of light

Description : Diffraction and interference demonstrate which of the following? w) particle nature of light x) wave nature of light y) polarization of light z) refraction of light

Last Answer : ANSWER: X -- WAVE NATURE OF LIGHT

Which of the following phenomena suggest that light may be a transverse wave? w) reflection x) polarization y) photoelectric effect z) diffraction

Description : Which of the following phenomena suggest that light may be a transverse wave? w) reflection x) polarization y) photoelectric effect z) diffraction

Last Answer : ANSWER: X -- POLARIZATION

When a certain beam of light falls upon a metal surface, it ejects photoelectrons from it. The number of photoelectrons ejected per second by the beam of light depends upon one of the following. Is it proportional to: w) the threshold frequency of the metal x) the work function of the metal y) the frequency of the beam z) the intensity of the beam

Description : When a certain beam of light falls upon a metal surface, it ejects photoelectrons from it. The number of photoelectrons ejected per second by the beam of light depends upon one of the following. Is it ... the work function of the metal y) the frequency of the beam z) the intensity of the beam

Last Answer : ANSWER: Z -- THE INTENSITY OF THE BEAM

The energy associated with one photon of a light beam is proportional to one of the following. Is it proportional to: w) the intensity of the light source from which it came x) the number of photons in the beam y) the frequency of the photon z) the speed of the photon

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Last Answer : ANSWER: Y -- THE FREQUENCY OF THE PHOTON

A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction. Is it: w) red x) yellow y) blue z) violet

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Last Answer : ANSWER: W -- RED

Which color light has the highest frequency? w) green x) violet y) red z) yellow

Description : Which color light has the highest frequency? w) green x) violet y) red z) yellow

Last Answer : ANSWER: X -- VIOLET

Of the following statements, which best distinguishes ordinary negligence from gross negligence? a. The more material the undetected error the greater the likelihood of ordinary negligence. b. Gross negligence is most probable when the auditor fails to detect errors that occurred under conditions of strong internal control. c. Failure to detect material errors, whether internal control is strong or weak, suggests gross negligence. d. Failure to exercise reasonable care denotes ordinary negligence, whereas failure to exercise minimal care indicates gross negligence

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Last Answer : Failure to exercise reasonable care denotes ordinary negligence, whereas failure to exercise minimal care indicates gross negligence

What is the wavelength of red light emitted by a helium-neon laser? w) 122 nanometers x) 633 nanometers y) 2.43 picometers z) 1.37 micrometers

Description : What is the wavelength of red light emitted by a helium-neon laser? w) 122 nanometers x) 633 nanometers y) 2.43 picometers z) 1.37 micrometers

Last Answer : ANSWER: X -- 633 NANOMETERS (actually 632.8 nm)

A beam of light is incident on a large block of glass. The index of refraction of the glass is greater than one. Is the wavelength of the light in the glass: w) longer than x) shorter than y) the same as the wavelength of the light in the air?

Description : A beam of light is incident on a large block of glass. The index of refraction of the glass is greater than one. Is the wavelength of the light in the glass: w) longer than x) shorter than y) the same as the wavelength of the light in the air?

Last Answer : ANSWER: X -- SHORTER THAN 

A beam of light is incident on a perfectly smooth body of water. The angle that the REFLECTED ray makes with the normal is: w) greater than x) smaller than y) the same as the angle the incident ray makes with the normal.

Description : A beam of light is incident on a perfectly smooth body of water. The angle that the REFLECTED ray makes with the normal is: w) greater than x) smaller than y) the same as the angle the incident ray makes with the normal.

Last Answer : ANSWER: Y -- THE SAME AS

Which of the following contributes to the broadening of laser emission bandwidth? a. Doppler shift of moving atoms and molecules b. Amplification within the laser medium c. Coherence of the laser light d. Optical pumping of the laser transition

Description : Which of the following contributes to the broadening of laser emission bandwidth? a. Doppler shift of moving atoms and molecules b. Amplification within the laser medium c. Coherence of the laser light d. Optical pumping of the laser transition

Last Answer : a. Doppler shift of moving atoms and molecules

Coherence of laser light is important for _________ ∙ a. Light propagation ∙ b. Getting laser light to pass through air ∙ c. Drilling holes ∙ d. Holography

Description : Coherence of laser light is important for _________ ∙ a. Light propagation ∙ b. Getting laser light to pass through air ∙ c. Drilling holes ∙ d. Holography

Last Answer : d. Holography

Which of the following contributes to the broadening of laser emission bandwidth? ∙ a. Doppler shift of moving atoms and molecules ∙ b. Amplification within the laser medium ∙ c. Coherence of the laser light ∙ d. Optical pumping of the laser transition

Description : Which of the following contributes to the broadening of laser emission bandwidth? ∙ a. Doppler shift of moving atoms and molecules ∙ b. Amplification within the laser medium ∙ c. Coherence of the laser light ∙ d. Optical pumping of the laser transition

Last Answer : Doppler shift of moving atoms and molecules

On a rainy day, small oil films on water show brilliant colors'. This is due to A. dispersion B. interference C. diffraction D. Polarization 49.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. absorbed B. totally reflected C. Partially reflected and partially transmitted D. Totally transmitted

Description : On a rainy day, small oil films on water show brilliant colors'. This is due to A. dispersion B. interference C. diffraction D. Polarization 49.The critical angle for a beam of light ... A. absorbed B. totally reflected C. Partially reflected and partially transmitted D. Totally transmitted

Last Answer : C. Partially reflected and partially transmitted

A space ship traveling toward Mars at 0.6 times the speed of light c shoots an ELECTRON beam at Mars. If the electrons travel at 0.6 c RELATIVE TO THE SPACE SHIP, at what speed do the electrons impact the surface of Mars? w) 0.6 c x) 0.88 c y) 1.2 c z) 1.34 c

Description : A space ship traveling toward Mars at 0.6 times the speed of light c shoots an ELECTRON beam at Mars. If the electrons travel at 0.6 c RELATIVE TO THE SPACE SHIP, at what speed do the electrons impact the surface of Mars? w) 0.6 c x) 0.88 c y) 1.2 c z) 1.34 c

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There are three commonly detectable points of zero polarization of diffuse sky radiation, neutral points, lying along the vertical circle through the sun. Which of the following is NOT one of these points? Is it the: w) Arago Point x) Babinet Point y) Brewster Point z) Longfellow Point

Description : There are three commonly detectable points of zero polarization of diffuse sky radiation, neutral points, lying along the vertical circle through the sun. Which of the following is NOT one of these points? Is it the: w) Arago Point x) Babinet Point y) Brewster Point z) Longfellow Point

Last Answer : ANSWER: Z -- LONGFELLOW POINT

In order for fiber optics to work, the incident light inside the fiber must hit the wall of the fiber at: w) 90 degrees x) 45 degrees y) an angle greater than the critical angle z) none of the above

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Last Answer : ANSWER: Y -- AN ANGLE GREATER THAN THE CRITICAL ANGLE 

What does the letter "s" stand for in the acronym laser? w) scientific x) simulated y) stimulated z) solar

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Last Answer : ANSWER: Y -- STIMULATED (LIGHT AMPLIFICATION BY STIMULATED MISSI)

The Doppler Effect predicts that the spectrum of light from a visible body moving AWAY from the Earth will experience a shift in frequency when viewed from Earth. This particular shift is known as the: w) Blue shift x) Neutral shift y) Red shift z) Dirac shift

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Last Answer : ANSWER: Y -- RED SHIFT

When light is traveling through a vacuum, what is the product of the light's wavelength and frequency equal to? w) speed of light x) Plank's constant y) momentum z) wave number

Description : When light is traveling through a vacuum, what is the product of the light's wavelength and frequency equal to? w) speed of light x) Plank's constant y) momentum z) wave number

Last Answer : ANSWER: W -- SPEED OF LIGHT

The speed of light in vacuum "C" divided by the Index of Refraction "N" gives the: w) frequency of the light x) speed of the light in the medium y) energy of the light z) wavelength of the light

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Last Answer : ANSWER: X -- SPEED OF THE LIGHT IN THE MEDIUM

When white light is passed through a double slit which of the following statements is TRUE: w) Each of the bright bands is dispersed into a spectrum x) Only the central band is dispersed into a spectrum y) All the bright bands except the central one are dispersed into a spectrum z) Each band has a single color different from its neighboring bands

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Last Answer : ANSWER: Y -- ALL THE BRIGHT BANDS EXCEPT THE CENTRAL ONE ARE DISPERSED INTO THE SPECTRUM

The wave nature of light is demonstrated by which of the following? w) the photoelectric effect x) color y) the speed of light z) diffraction

Description : The wave nature of light is demonstrated by which of the following? w) the photoelectric effect x) color y) the speed of light z) diffraction

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Laser is a device to produce - (1) a beam of white light (2) coherent light (3) microwaves (4) X-rays

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Which is NOT a characteristic of a series circuit? w) The current is the same throughout. x) The total resistance is the sum of the individual resistance. y) The voltage of the source equals the sum of the circuit's individual voltage drops. z) The total resistance is the sum of the reciprocals of the individual resistances.

Description : Which is NOT a characteristic of a series circuit? w) The current is the same throughout. x) The total resistance is the sum of the individual resistance. y) The voltage of the source ... individual voltage drops. z) The total resistance is the sum of the reciprocals of the individual resistances.

Last Answer : ANSWER: Z -- THE TOTAL RESISTANCE IS THE SUM OF THE RECIPROCALS OF THE RECIPROCAL OF THE INDIVIDUAL RESISTANCES.

A characteristic of the noble gases is that they all: w) have eight electrons in the outer shell x) have low stability y) form many compounds z) have filled outer electron shells

Description : A characteristic of the noble gases is that they all: w) have eight electrons in the outer shell x) have low stability y) form many compounds z) have filled outer electron shells

Last Answer : ANSWER: Z -- HAVE FILLED OUTER ELECTRON SHELLS

In radioactive decay, the emission of an electron is characteristic of: w) Alpha decay x) Beta decay y) Gamma decay z) X-rays

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Last Answer : ANSWER: X -- BETA DECAY

What generates a light beam of a specific visible frequency? a. Laser b. Maser c. Infrared d. Flashlight

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________ generates light beam at a specific visible frequency. A. Glass fiber B. Infrared C. Light waves D. Laser

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What generates a light beam of a specific visible frequency? ∙ a. Laser ∙ b. Maser ∙ c. Infrared ∙ d. Flashlight

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Last Answer : ∙ a. Laser

A perfectly spherical bubble of air is suspended in a tank of water. A beam of light consisting of parallel rays passes through the bubble. As the light emerges from the opposite side of the bubble the light rays: w) diverge x) converge y) are unaffected

Description : A perfectly spherical bubble of air is suspended in a tank of water. A beam of light consisting of parallel rays passes through the bubble. As the light emerges from the opposite side of the bubble the light rays: w) diverge x) converge y) are unaffected

Last Answer : ANSWER: W -- DIVERGE

Which of the following is the mineral name for ordinary salt? w) biotite x) calcite y) halite z) dolomite

Description : Which of the following is the mineral name for ordinary salt? w) biotite x) calcite y) halite z) dolomite

Last Answer : ANSWER: Y -- HALITE

Sucrose, ordinary table sugar, may be classified as a: w) Monosaccharide x) Disaccharide y) Polysaccharide z) Oligosaccharide

Description : Sucrose, ordinary table sugar, may be classified as a: w) Monosaccharide x) Disaccharide y) Polysaccharide z) Oligosaccharide

Last Answer : ANSWER: X -- DISACCHARIDE 

The temperature of a gas is held constant while its volume is reduced. The pressure the gas exerts on the walls of its container increases because its molecules: w) strike the container walls more often x) strike the container walls with higher speeds y) strike the container walls with greater force z) all of the above

Description : The temperature of a gas is held constant while its volume is reduced. The pressure the gas exerts on the walls of its container increases because its molecules: w) strike the container walls more ... walls with higher speeds y) strike the container walls with greater force z) all of the above

Last Answer : ANSWER: W -- STRIKE THE CONTAINER WALLS MORE OFTEN

The magnitude of the quarks' electric charge is: w) zero. x) greater than the electron's charge. y) equal to the electron's charge. z) less than the electron's charge.

Description : The magnitude of the quarks' electric charge is: w) zero. x) greater than the electron's charge. y) equal to the electron's charge. z) less than the electron's charge.

Last Answer : ANSWER: Z -- LESS THAN THE ELECTRON'S CHARGE. 

A proton and an alpha particle pass through the gap of a strong magnet. If both particles have the same initial velocity, how many times greater will the defection of the proton be relative to the deflection of the alpha particle? Will it be: w) the same x) 2 times y) 4 times z) 8 times

Description : A proton and an alpha particle pass through the gap of a strong magnet. If both particles have the same initial velocity, how many times greater will the defection of the proton be relative to the deflection of the alpha particle? Will it be: w) the same x) 2 times y) 4 times z) 8 times

Last Answer : ANSWER: X -- 2 TIMES

The energy dissipated when a car hits a tree at 70 miles per hour is ABOUT how much greater than that dissipated at 50 miles per hour? w) 20 percent x) 40 percent y) 70 percent z) 100 percent

Description : The energy dissipated when a car hits a tree at 70 miles per hour is ABOUT how much greater than that dissipated at 50 miles per hour? w) 20 percent x) 40 percent y) 70 percent z) 100 percent

Last Answer : ANSWER: Z -- 100 PERCENT

A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a frictionless surface. As the firecracker explodes, the balls scatter. What is the momentum of the SYSTEM after the explosion of the firecracker? w) greater than the momentum of the system before the explosion x) equal to the combined speed of the balls y) equal to the mass of the balls z) zero

Description : A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a frictionless surface. As the firecracker explodes, the balls scatter. What is the momentum ... to the combined speed of the balls y) equal to the mass of the balls z) zero

Last Answer : ANSWER: Z -- ZERO

Two hockey pucks, of unequal mass and connected by a spring of negligible mass, rest on a horizontal frictionless surface. The spring is released, and the pucks move apart. The center of mass of the two pucks does one of the following. Does it: w) move in a circle x) move in the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass

Description : Two hockey pucks, of unequal mass and connected by a spring of negligible mass, rest on a horizontal frictionless surface. The spring is released, and the pucks move apart. The center of mass of ... the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass

Last Answer : ANSWER: Y -- REMAIN STATIONARY

In an elastic collision, the RELATIVE velocities of separation of the two bodies after impact compared with the relative velocity of approach before impact is: w) always greater x) always smaller y) always the same z) first greater, then smaller

Description : In an elastic collision, the RELATIVE velocities of separation of the two bodies after impact compared with the relative velocity of approach before impact is: w) always greater x) always smaller y) always the same z) first greater, then smaller

Last Answer : ANSWER: Y -- ALWAYS THE SAME

Of the following choices, approximately how many times greater is the mass of a proton than the mass of an electron? w) 200 x) 2000 y) 20,000 z) 200,000

Description : Of the following choices, approximately how many times greater is the mass of a proton than the mass of an electron? w) 200 x) 2000 y) 20,000 z) 200,000 

Last Answer : ANSWER: X -- 2000

The density of seawater is greater than that of fresh water. A boat will float: w) Higher in fresh water than in seawater x) Lower in fresh water than in seawater y) At the same level in both z) Any of the above, depending upon its shape

Description : The density of seawater is greater than that of fresh water. A boat will float: w) Higher in fresh water than in seawater x) Lower in fresh water than in seawater y) At the same level in both z) Any of the above, depending upon its shape

Last Answer : ANSWER: X -- LOWER IN FRESH WATER THAN IN SEAWATER

The relationship between kinetic energy and the potential energy of a swinging pendulum bob is one of the following. Is it: w) kinetic energy is greater than potential energy x) kinetic energy is less than potential energy y) kinetic energy is equal to potential energy z) kinetic energy plus potential energy equals a constant

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Last Answer : ANSWER: Z -- KINETIC ENERGY PLUS POTENTIAL ENERGY EQUALS A CONSTANT 

Light beam which is highly directional is called: (1) eraser (2) grazer (3) maser (4) laser

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Last Answer : (4) laser Explanation: Laser light is very different from normal light. It is very directional, has a very tight beam and is very strong and concentrated. The light released is monochromatic. It contains one specific wavelength of light (one specific colour).

Light beam which is highly directional is called: (1) eraser (2) grazer (3) maser (4) laser

Description : Light beam which is highly directional is called: (1) eraser (2) grazer (3) maser (4) laser

Last Answer : laser

When microwave energy is passed through a piece of ferrite in a magnetic field, another effect occurs. If the frequency of the microwave energy is much greater than the electron wobble frequency, the plane of polarization of the wavefront is rotated. This is known as

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Of the following answers, which is the frequency closest to middle-C on a piano? w) 20 x) 256 y) 2520 z) 25200

Description : Of the following answers, which is the frequency closest to middle-C on a piano? w) 20 x) 256 y) 2520 z) 25200

Last Answer : ANSWER: X -- 256