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

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

1 Answer

Answer :

(2) coherent light Explanation: In physics, two wave sources are perfectly coherent if they have a constant phase difference and the same frequency, and the same waveform. Coherence is an ideal property of waves that enables stationary (i.e. temporally and spatially constant) interference.
by
selected

Related questions

Laser is a device to produce (A) Gamma rays (B) Microwaves (C) A beam of white light (D) A beam of coherent light

Description : Laser is a device to produce (A) Gamma rays (B) Microwaves (C) A beam of white light (D) A beam of coherent light

Last Answer : Option B

The Laser is a beam of radiations which are – (1) Non-coherent and monochromatic (2) Coherent and monochromatic (3) Non-coherent and non-monochromatic (4) Coherent and non-monochromatic

Description : The Laser is a beam of radiations which are – (1) Non-coherent and monochromatic (2) Coherent and monochromatic (3) Non-coherent and non-monochromatic (4) Coherent and non-monochromatic

Last Answer : (2) Coherent and monochromatic Explanation: Laser, an acronym for Light Amplification by Stimulated Emission of Radiation, creates a radiation beam that is coherent (in-phase). In a coherent light ... results in a radiation beam of great intensity. It normally produces only one or two wavelengths.

The Laser is a beam of radiations which are (1) Non-coherent and monochromatic (2) Coherent and monochromatic (3) Non-coherent and non-monochromatic (4) Coherent and non-monochromatic

Description : The Laser is a beam of radiations which are (1) Non-coherent and monochromatic (2) Coherent and monochromatic (3) Non-coherent and non-monochromatic (4) Coherent and non-monochromatic 

Last Answer : Coherent and monochromatic

Lasers are used to produce a) Intense beam of visible light b) monochromatic beam of visible light c) coherent beam of visible light d) All of them

Description : Lasers are used to produce a) Intense beam of visible light b) monochromatic beam of visible light c) coherent beam of visible light d) All of them

Last Answer : d) All of them

Laser light is very bright because it is ∙ a. Pure ∙ b. White ∙ c. Coherent ∙ d. Monochromatic

Description : Laser light is very bright because it is ∙ a. Pure ∙ b. White ∙ c. Coherent ∙ d. Monochromatic

Last Answer : c. Coherent

Radio waves, microwaves, infra-red spectrum, ultraviolet rays, X-rays and gamma rays are classified as ______. (1) light waves (2) electromagnetic waves (3) electric waves (4) magnetic waves

Description : Radio waves, microwaves, infra-red spectrum, ultraviolet rays, X-rays and gamma rays are classified as ______. (1) light waves (2) electromagnetic waves (3) electric waves (4) magnetic waves

Last Answer : (2) electromagnetic waves Explanation: Electromagnetic radiation is the radiant energy released by certain electromagnetic processes. It consists of electromagnetic waves which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum.

Where are mesons found? (1) Cosmic rays (2) X-rays (3) Gamma rays (4) Laser beam

Description : Where are mesons found? (1) Cosmic rays (2) X-rays (3) Gamma rays (4) Laser beam

Last Answer : (1) Cosmic rays Explanation: Mesons are not produced by radioactive decay, but appear in nature only as short-lived products of very high-energy interactions in matter, between particles made ... subatomic particles composed of one quark and one anti-quark, bound together by the strong interaction.

Where are mesons found ? (1) Cosmic rays (2) X-rays (3) Gamma rays (4) Laser beam

Description : Where are mesons found ? (1) Cosmic rays (2) X-rays (3) Gamma rays (4) Laser beam

Last Answer : Cosmic rays

A color television set employs a 25,000 volt electron accelerator to produce the picture and potentially harmful radiation which must be shielded against. The main component of this radiation consists of w) electrons which penetrate the picture tube x) soft x-rays y) microwaves z) ultraviolet radiation

Description : A color television set employs a 25,000 volt electron accelerator to produce the picture and potentially harmful radiation which must be shielded against. The main component of this radiation consists ... which penetrate the picture tube x) soft x-rays y) microwaves z) ultraviolet radiation 

Last Answer : ANSWER: X -- SOFT X-RAYS

Which of the following is used in oven? (1) X-rays (2) UV-rays (3) Microwaves (4) Radio waves

Description : Which of the following is used in oven? (1) X-rays (2) UV-rays (3) Microwaves (4) Radio waves

Last Answer : (3) Microwaves Explanation: An oven is a thermally insulated chamber used for the heating, baking or drying of a substance and most commonly used for cooking.

Which of the following is used in oven? (1) X-rays (2) UV rays (3) Microwaves (4) Radiowaves

Description : Which of the following is used in oven? (1) X-rays (2) UV rays (3) Microwaves (4) Radiowaves

Last Answer : (3) Microwaves Explanation: An oven that uses micro radiation waves as a source of heat in order to cook food as opposed to a fire source. Conceptualized in 1946, Dr. Perry ... appliance that heats food by dielectric heating accomplished with radiation used to heat polarized molecules in food.

The radiation initially produced in fluorescent tube is – (1) infrared (2) ultraviolet (3) microwaves (4) X-rays

Description : The radiation initially produced in fluorescent tube is – (1) infrared (2) ultraviolet (3) microwaves (4) X-rays

Last Answer : (2) ultraviolet Explanation: The primary radiation that is initially produced within a fluorescent lamp is analogous to that emitted by a low pressure mercury lamp. Fluorescent lamps produce UV radiation by ... coating on the inside of the tubes absorbs the UV and converts it to visible light.

The radiation initially produced in fluorescent tube is (1) infrared (2) ultraviolet (3) microwaves (4) X-rays

Description : The radiation initially produced in fluorescent tube is (1) infrared (2) ultraviolet (3) microwaves (4) X-rays

Last Answer : ultraviolet

Which of the following is used in oven ? (1) X-rays (2) UV rays (3) Microwaves (4) Radiowaves

Description : Which of the following is used in oven ? (1) X-rays (2) UV rays (3) Microwaves (4) Radiowaves

Last Answer : Microwaves

Laser light is ______ emission. a. Coherent b. Stimulated c. Spontaneous d. Coherent and stimulated

Description : Laser light is ______ emission. a. Coherent b. Stimulated c. Spontaneous d. Coherent and stimulated

Last Answer : d. Coherent and stimulated

Laser light is ______ emission. ∙ a. Coherent ∙ b. Stimulated ∙ c. Spontaneous ∙ d. Coherent and stimulated

Description : Laser light is ______ emission. ∙ a. Coherent ∙ b. Stimulated ∙ c. Spontaneous ∙ d. Coherent and stimulated

Last Answer : ∙ d. Coherent and stimulated

For bactericidal activity,__________ has/have the ability to cause thymine dimer formation. a. X rays b. B ultraviolet light a. Gamma Rays b. Microwaves

Description : For bactericidal activity,__________ has/have the ability to cause thymine dimer formation. a. X rays b. B ultraviolet light a. Gamma Rays b. Microwaves

Last Answer : b. B ultraviolet light

____ is a light that can be coherent ∙ a. Spontaneous emission ∙ b. Monochromatic and in-phase ∙ c. Narrow beam divergence ∙ d. Monochromatic

Description : ____ is a light that can be coherent ∙ a. Spontaneous emission ∙ b. Monochromatic and in-phase ∙ c. Narrow beam divergence ∙ d. Monochromatic

Last Answer : ∙ b. Monochromatic and in-phase

Meson particles are found in- (1) R-rays (2) X-rays (3) Laser beam (4) Cosmic rays

Description : Meson particles are found in- (1) R-rays (2) X-rays (3) Laser beam (4) Cosmic rays

Last Answer : (4) Cosmic rays Explanation: Meson, any member of a family of subatomic particles composed of a quark and an antiquark. Mesons are sensitive to the strong force, the fundamental interaction that binds the components of the nucleus by governing the behavior of their constituent quarks.

Waves that are required for long distance wireless communication are – (1) Infrared rays (2) Ultraviolet rays (3) Radio waves (4) Microwaves

Description : Waves that are required for long distance wireless communication are – (1) Infrared rays (2) Ultraviolet rays (3) Radio waves (4) Microwaves

Last Answer : (3) Radio waves Explanation: Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor. With radio waves distances can be short ... , or as far as thousands or even millions of kilometres for deep-space radio communications.

Waves that are required for long distance wireless communication are (1) Infrared rays (2) Ultraviolet rays (3) Radio waves (4) Microwaves

Description : Waves that are required for long distance wireless communication are (1) Infrared rays (2) Ultraviolet rays (3) Radio waves (4) Microwaves

Last Answer : Radio waves

They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser). ∙ A. Theodore Maiman ∙ B. KC Kao and GA Bockham ∙ C. Charles Townes and Arthur Schawlow ∙ D. Kapron, Keck and Maurer

Description : They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser). ∙ A. Theodore Maiman ∙ B. KC Kao and GA Bockham ∙ C. Charles Townes and Arthur Schawlow ∙ D. Kapron, Keck and Maurer

Last Answer : C. Charles Townes and Arthur Schawlow

They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser).

Description : They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser).

Last Answer : Charles Townes and Arthur Schawlow

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

Description : 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

Last Answer : ANSWER: X -- THE COHERENCE OF THE LASER BEAM

Two sources of light are said to be coherent if __________. A. they produce waves of the same wave length B. they have the same amplitude of vibration C. they produce waves in the medium simultaneously D. they produce waves of the same amplitude

Description : Two sources of light are said to be coherent if __________. A. they produce waves of the same wave length B. they have the same amplitude of vibration C. they produce waves in the medium simultaneously D. they produce waves of the same amplitude

Last Answer : D. they produce waves of the same amplitude

Coherent light of a single frequency passes through a double slit with a separation d, to produce a pattern on a screen as distance D from the slits. What would cause the separation between adjacent minima on the screen to increase? A. A. increase the index of refraction of the medium in which the setup is immersed B. increase the separation d between the slits C. increase the distance D. increase the frequency of the incident light

Description : Coherent light of a single frequency passes through a double slit with a separation d, to produce a pattern on a screen as distance D from the slits. What would cause the separation between adjacent ... d between the slits C. increase the distance D. increase the frequency of the incident light

Last Answer : B. increase the separation d between the slits

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

What are the electromagnetic radiations of wavelengths less than 300 angstroms? A. X-rays B. Ultraviolet rays C. Infrared D. Microwaves

Description : What are the electromagnetic radiations of wavelengths less than 300 angstroms? A. X-rays B. Ultraviolet rays C. Infrared D. Microwaves

Last Answer : A. X-rays

oining of thin foils is preferred to be done by (A) Gamma rays (B) X-rays (C) Microwaves (D) Gas welding

Description : oining of thin foils is preferred to be done by (A) Gamma rays (B) X-rays (C) Microwaves (D) Gas welding

Last Answer : Option C

Joining of thin foils is preferred to be done by (A) Gamma rays (B) X-rays (C) Microwaves (D) Gas welding

Description : Joining of thin foils is preferred to be done by (A) Gamma rays (B) X-rays (C) Microwaves (D) Gas welding

Last Answer : Option C

Pair production can be studied with a) Ultraviolet rays b) X-rays c) Microwaves d) -rays

Description : Pair production can be studied with a) Ultraviolet rays b) X-rays c) Microwaves d) -rays

Last Answer : d) -rays

The first laser emitted a. Pulses of 694 nm red light b. A continuous red beam c. Pulses of white light from a helical flashlamp d. Spontaneous emission

Description : The first laser emitted a. Pulses of 694 nm red light b. A continuous red beam c. Pulses of white light from a helical flashlamp d. Spontaneous emission

Last Answer : a. Pulses of 694 nm red light

The first laser emitted ∙ a. Pulses of 694 nm red light ∙ b. A continuous red beam ∙ c. Pulses of white light from a helical flash lamp ∙ d. Spontaneous emission

Description : The first laser emitted ∙ a. Pulses of 694 nm red light ∙ b. A continuous red beam ∙ c. Pulses of white light from a helical flash lamp ∙ d. Spontaneous emission

Last Answer : ∙ a. Pulses of 694 nm red light

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 : (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

A solar cell does NOT respond to red light, but DOES respond to green light. The solar cell will be able to respond to: w) microwaves x) infra-red light y) ultraviolet light z) all of the above

Description : A solar cell does NOT respond to red light, but DOES respond to green light. The solar cell will be able to respond to: w) microwaves x) infra-red light y) ultraviolet light z) all of the above

Last Answer : ANSWER: Y -- ULTRAVIOLET LIGHT

Of the following, the most energetic form of NON-IONIZING radiation is: w) ultra-violet light x) infra-red light y) radar z) microwaves

Description : Of the following, the most energetic form of NON-IONIZING radiation is: w) ultra-violet light x) infra-red light y) radar z) microwaves

Last Answer : ANSWER: W -- ULTRA-VIOLET LIGHT

I have severe osteoarthritis and in paticular my index finger large joint is very swollen and painful. Could this laser tech procedure work on that joint.A surgeon wants to replace this joint. X-rays show large white deposits. I really don't want surgery.?

Description : I have severe osteoarthritis and in paticular my index finger large joint is very swollen and painful. Could this laser tech procedure work on that joint.A surgeon wants to replace this joint. X-rays show large white deposits. I really don't want surgery.?

Last Answer : Laser surgery is much less invasive than the old types of surgeries that are available. You will recuperate much faster and have less pain. In my case I have had that type of surgery and though I do ... replacement. Only you can make this decision for yourself. I can tell you that it worked for me.

EPROM contents can be erased by exposing it to (A) Ultraviolet rays. (B) Infrared rays. (C) Burst of microwaves. (D) Intense heat radiations.

Description : EPROM contents can be erased by exposing it to (A) Ultraviolet rays. (B) Infrared rays. (C) Burst of microwaves. (D) Intense heat radiations.

Last Answer : (A) Ultraviolet rays. EPROM contents can be erased by exposing it to Ultraviolet rays (The Ultraviolet light passes through a window in the IC package to the EPROM chip where it releases stored charges. Thus the stored contents are erased).

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

To measure the speed of an approaching car a police officer shines – (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Description : To measure the speed of an approaching car a police officer shines – (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Last Answer : (3) radio waves on it Explanation: Radar, which stands for radio detection and ranging, is a system that uses reflected radio waves to detect objects and measure their distance and speed. For example, police use radar to calculate the speed of cars.

To measure the speed of an approaching car a police officer shines (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Description : To measure the speed of an approaching car a police officer shines (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Last Answer : radio waves on it

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

Description : 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

Last Answer : ANSWER: W -- RED

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 

How bright is a laser beam when viewed from the side? -Physics

Description : How bright is a laser beam when viewed from the side? -Physics

Last Answer : While traveling through the vacuum of space, laser beams are invisible unless shot directly into your eye. The experience you know of as vision consists of light entering your eyes and being detecting by cells ... dramatic to see a flash of light shoot out of a gun than nothing visible shoot out.

LASER stands for: a. Light Amplification by Simulated Emission of Radiation b. Light Amplification by Stimulated Emission of Radiation c. Light Amplification by Simulated Emitted Rays d. Light Amplification by Stimulated Emitted Rays

Description : LASER stands for: a. Light Amplification by Simulated Emission of Radiation b. Light Amplification by Stimulated Emission of Radiation c. Light Amplification by Simulated Emitted Rays d. Light Amplification by Stimulated Emitted Rays

Last Answer : b. Light Amplification by Stimulated Emission of Radiation

Coolis tube is used to produce – (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Description : Coolis tube is used to produce – (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Last Answer : (3) X-rays Explanation: X-rays are part of the electromagnetic spectrum, an ionizing radiation with wavelengths shorter than ultraviolet light. X-ray tubes evolved from experimental Crookes tubes ... X-rays created the field of radiography, the imaging of opaque objects with penetrating radiation.

Coolis tube is used to produce (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Description : Coolis tube is used to produce (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Last Answer : X-rays

Period of oscillation of 3 cm microwaves in seconds is (1) 1 x 10¹⁰ (2) 1 x 10⁻¹⁰ (3) 0.01 (4) 0.001

Description : Period of oscillation of 3 cm microwaves in seconds is (1) 1 x 10¹⁰ (2) 1 x 10⁻¹⁰ (3) 0.01 (4) 0.001

Last Answer : (2) 1 x 10⁻¹⁰ Explanation: The period of oscillation of 3 cm microwaves is 1 x 10^-10 (Physics, Volume 1, by Halliday). The period of oscillation is the smallest interval of time in which a system undergoing oscillation returns to the state it was in at the beginning of the oscillation.

Which wave has the highest frequency? w) microwaves x) infrared waves y) ultraviolet waves z) radio waves

Description : Which wave has the highest frequency? w) microwaves x) infrared waves y) ultraviolet waves z) radio waves

Last Answer : ANSWER: Y -- ULTRAVIOLET WAVES