Echo is a ------ of sound? A. Reflection (Answer) B. Refraction C. Interference D. None

Echo is a ------ of sound?

A. Reflection (Answer)

B. Refraction

C. Interference

D. None
by

1 Answer

Answer :

A. Reflection (Answer)
by

Related questions

Which phenomenon is responsible for the echo of sound wave? (1) Reflection (2) Refraction (3) Interference (4) Polarization

Description : Which phenomenon is responsible for the echo of sound wave? (1) Reflection (2) Refraction (3) Interference (4) Polarization

Last Answer : (1) Reflection Explanation: Reflection of sound waves off of surfaces lead to one of two phenomena - an echo or a reverberation. The echo is produced due to hitting of the sound waves with the ... reflected sound wave reaches the ear more than 0.1 seconds after the original sound wave was heard.

Which phenomenon is responsible for the echo of sound wave? (1) Reflection (2) Refraction (3) Interference (4) Polarisation

Description : Which phenomenon is responsible for the echo of sound wave? (1) Reflection (2) Refraction (3) Interference (4) Polarisation

Last Answer : Reflection

The Reason for a Swimming Pool to appear Less Deep than the actual depth is-----? A. Refraction (Answer) B. Light scattering C. Reflection D. Interference

Description : The Reason for a Swimming Pool to appear Less Deep than the actual depth is-----? A. Refraction (Answer) B. Light scattering C. Reflection D. Interference

Last Answer : A. Refraction (Answer)

Twinkling of stars is caused by ? A. Reflection of light B. Polarization of light C. refraction of light (Answer) D. Interference of light E. None of these

Description : Twinkling of stars is caused by ? A. Reflection of light B. Polarization of light C. refraction of light (Answer) D. Interference of light E. None of these

Last Answer : C. refraction of light (Answer)

Blue of the sky is due to the (a) Refraction of white light by the atmosphere (b) Reflection of white light by the earth (c) Scattering of white light by molecules of air (d) Interference of white light

Description : Blue of the sky is due to the (a) Refraction of white light by the atmosphere (b) Reflection of white light by the earth (c) Scattering of white light by molecules of air (d) Interference of white light

Last Answer : Ans:(c)

The information of brilliant colors in a thin soap film is a consequence of the phenomena of - (1) Polarization and interference (2) Diffraction and dispersion (3) Multiple refraction and dispersion (4) Multiple reflection and interference

Description : The information of brilliant colors in a thin soap film is a consequence of the phenomena of - (1) Polarization and interference (2) Diffraction and dispersion (3) Multiple refraction and dispersion (4) Multiple reflection and interference

Last Answer : (4) Multiple reflection and interference Explanation: Light waves reflected by the upper and lower boundaries of a thin film interfere with one another, either enhancing or reducing the reflected light.

The information of brilliant colors in a thin soap film is a consequence of the phenomena of - (1) Polarization and interference (2) Diffraction and dispersion (3) Multiple refraction and dispersion (4) Multiple reflection and interference

Description : The information of brilliant colors in a thin soap film is a consequence of the phenomena of - (1) Polarization and interference (2) Diffraction and dispersion (3) Multiple refraction and dispersion (4) Multiple reflection and interference

Last Answer : (4) Multiple reflection and interference Explanation: Light waves reflected by the upper and lower boundaries of a thin film interfere with one another, either enhancing or reducing the reflected light.

Light waves projected on oil surface show seven colours due to the phenomenon of (1) polarisation (2) refraction (3) reflection (4) interference

Description : Light waves projected on oil surface show seven colours due to the phenomenon of (1) polarisation (2) refraction (3) reflection (4) interference

Last Answer : (4) interference Explanation: In physics, interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude.

Optical fibre works on the principle of (1) refraction (2) scattering (3) interference (4) total internal reflection

Description : Optical fibre works on the principle of (1) refraction (2) scattering (3) interference (4) total internal reflection

Last Answer : (4) total internal reflection Explanation: Since Torque = force x distance, to open a door easily, the handle should be fixed at the greatest distance from the hinges. If we pull with same force on a handle ... from the hinges, we will provide twice the torque, so it will be twice as easy to open.

Optical fibre works on the - (1) principle of refraction (2) total internal reflection (3) scattering (4) interference

Description : Optical fibre works on the - (1) principle of refraction (2) total internal reflection (3) scattering (4) interference

Last Answer : b) total internal reflection Explanation: Optical fiber is a cylindrical dielectric waveguide (non-conducting waveguide) that transmits light along its axis, by the process of total internal reflection.

The phenomenon of light associated with the appearance of blue colour of the sky is – (1) Interference (2) Reflection (3) Refraction (4) Scattering

Description : The phenomenon of light associated with the appearance of blue colour of the sky is – (1) Interference (2) Reflection (3) Refraction (4) Scattering

Last Answer : (4) Scattering Explanation: During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface ... day sky is a result of scattering, which is dominated by a smallparticle limit called Rayleigh scattering.

Lambert's law is related to – (1) Reflection (2) Refraction (3) Interference (4) Illumination

Description : Lambert's law is related to – (1) Reflection (2) Refraction (3) Interference (4) Illumination

Last Answer : (4) Illumination Explanation: In optics, Lambert's cosine law says that the radiant intensity or luminous intensity observed from an ideal diffusely reflecting surface or ideal diffuse radiator is directly proportional ... . The law is also known as the cosine emission law or Lambert's emission law.

The reason for a swimming pool to appear less deep than the actual depth is – (1) Refraction (2) Light scattering (3) Reflection (4) Interference

Description : The reason for a swimming pool to appear less deep than the actual depth is – (1) Refraction (2) Light scattering (3) Reflection (4) Interference

Last Answer : (1) Refraction Explanation: The apparent depth will look less that its real depth due to the refraction of light. Refraction is the bending of a wave when it enters a medium where it's speed is ... depends on the indices of refraction of the two media and is described quantitatively by Snell's Law.

The sparkling of a diamond is due to – (1) total internal reflection of light (2) interference of light (3) polarisation of light (4) refraction of light

Description : The sparkling of a diamond is due to – (1) total internal reflection of light (2) interference of light (3) polarisation of light (4) refraction of light

Last Answer : (1) total internal reflection of light Explanation: Diamonds sparkle because of the total internal reflection of light. Diamonds have a very high refractive index, meaning they slow light down much more ... so that light seems to get 'trapped' within the diamond giving it it's sparkly appearance.

Lamberts law is related to – (1) Reflection (2) Refraction (3) Interference (4) Illumination

Description : Lamberts law is related to – (1) Reflection (2) Refraction (3) Interference (4) Illumination

Last Answer : (4) Illumination Explanation: Lambert's Law says that the intensity of emitted light from a surface is directly proportional to the cosine of the angle between the line of view and the normal ... , and exhibits Lambertian reflectance. Such a surface has the same radiance when viewed from any angle.

Which of the following phenomena provides a convincing proof for wave nature of radiation a) Reflection b) Refraction c) Polarization d) Interference and diffraction

Description : Which of the following phenomena provides a convincing proof for wave nature of radiation a) Reflection b) Refraction c) Polarization d) Interference and diffraction

Last Answer : d) Interference and diffraction

Diffraction is special type of __________. A. Reflection B. Refraction C. Interference D. Polarization

Description : Diffraction is special type of __________. A. Reflection B. Refraction C. Interference D. Polarization

Last Answer : B. Refraction

Optical fiber works on the A. principle of refraction B. total internal reflection C. scattering D. interference

Description : Optical fiber works on the A. principle of refraction B. total internal reflection C. scattering D. interference

Last Answer : B. total internal reflection

hat is the name of the process whereby waves travel around corners and obstacles in their paths? A. Reflection B. Refraction C Interference D. Diffraction

Description : hat is the name of the process whereby waves travel around corners and obstacles in their paths? A. Reflection B. Refraction C Interference D. Diffraction

Last Answer : D. Diffraction

Optical fibre works on the principle of (1) refraction (2) scattering (3) interference (4) total internal reflection

Description : Optical fibre works on the principle of (1) refraction (2) scattering (3) interference (4) total internal reflection

Last Answer : total internal reflection 

The sparkling of a diamond is due to (1) total internal reflection of light (2) interference of light (3) polarisation of light (4) refraction of light

Description : The sparkling of a diamond is due to (1) total internal reflection of light (2) interference of light (3) polarisation of light (4) refraction of light

Last Answer : total internal reflection of light

The phenomenon of light associated with the appear-ance of blue colour of the sky is (1) Interference (2) Reflection (3) Refraction (4) Scattering

Description : The phenomenon of light associated with the appear-ance of blue colour of the sky is (1) Interference (2) Reflection (3) Refraction (4) Scattering

Last Answer : Scattering

The reason for a swimming pool to appear less deep than the actual depth is (1) refraction (2) light scattering (3) reflection (4) interference

Description : The reason for a swimming pool to appear less deep than the actual depth is (1) refraction (2) light scattering (3) reflection (4) interference

Last Answer : refraction

Lamberts law is related to (1) Reflection (2) Refraction (3) Interference (4) Illumination

Description : Lamberts law is related to (1) Reflection (2) Refraction (3) Interference (4) Illumination

Last Answer : Illumination

Which phenomenon do bats or dolphins use to find prey, predators or obstacles? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location

Description : Which phenomenon do bats or dolphins use to find prey, predators or obstacles? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location

Last Answer : (4) Echo location Explanation: Echolocation, also called biosonar, is the biological sonar used by several kinds of animals. Echolocating animals emit calls out to the environment and ... swiftlets in the genus Aerodramus (formerly Collocalia) and the unrelated Of bird Steatornis caripensis.

Which phenomenon do bats or dolphins use to find prey, predators or obstacles ? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location

Description : Which phenomenon do bats or dolphins use to find prey, predators or obstacles ? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location

Last Answer : Echo location

What do you call the perceptible sound repetition? A. Reverberation B. Echo C. Reflection D. Masking

Description : What do you call the perceptible sound repetition? A. Reverberation B. Echo C. Reflection D. Masking

Last Answer : B. Echo

A man is sitting by the side of a large lake. He hears the utterances of bathers with their mouth close to water surface more clearly than if they were at same distance away on land. This effect is due to sound waves undergoing (a) Reflection (b) Refraction (c) Dispersion (d) Total internal reflection

Description : A man is sitting by the side of a large lake. He hears the utterances of bathers with their mouth close to water surface more clearly than if they were at same distance away on land. This ... due to sound waves undergoing (a) Reflection (b) Refraction (c) Dispersion (d) Total internal reflection

Last Answer : Ans:(c)

When a vibrating tuning fork is placed on a table, a loud sound is heard. This is due to – (1) reflection (2) refraction (3) forced vibrations (4) damped vibrations

Description : When a vibrating tuning fork is placed on a table, a loud sound is heard. This is due to – (1) reflection (2) refraction (3) forced vibrations (4) damped vibrations

Last Answer : (3) forced vibrations Explanation: The tendency of one object to force another adjoining or interconnected object into vibrational motion is referred to as a forced vibration. In the case of the ... forced into vibration. This causes an increase in the amplitude and thus loudness of the sound.

The tendency of the sound energy to spread. A. Rarefaction B. Reflection C. Refraction D. Diffraction

Description : The tendency of the sound energy to spread. A. Rarefaction B. Reflection C. Refraction D. Diffraction

Last Answer : D. Diffraction

Tendency of sound energy to spread. A. Reflection B. Diffraction C. Rarefaction D. Refraction

Description : Tendency of sound energy to spread. A. Reflection B. Diffraction C. Rarefaction D. Refraction

Last Answer : B. Diffraction

_______ is the transmission of sound from one room to an adjacent room thru common walls, floors or ceilings. A. Reverberation B. Refraction C. Flanking transmission D. Reflection

Description : _______ is the transmission of sound from one room to an adjacent room thru common walls, floors or ceilings. A. Reverberation B. Refraction C. Flanking transmission D. Reflection

Last Answer : C. Flanking transmission

When a vibrating tuning fork is placed on a table, a loud sound is heard. This is due to : (1) reflection (2) refraction (3) forced vibrations (4) damped vibrations

Description : When a vibrating tuning fork is placed on a table, a loud sound is heard. This is due to : (1) reflection (2) refraction (3) forced vibrations (4) damped vibrations

Last Answer : forced vibrations

The luster of diamond is due to-----? A. Reflection B. Total internal reflection (Answer) C. Refraction D. None of these

Description : The luster of diamond is due to-----? A. Reflection B. Total internal reflection (Answer) C. Refraction D. None of these

Last Answer : B. Total internal reflection (Answer)

The blue colour of clear sky is due to--------? A. Reflection of light B. Refraction of light C. Diffraction of light D. Dispersion of light (Answer)

Description : The blue colour of clear sky is due to--------? A. Reflection of light B. Refraction of light C. Diffraction of light D. Dispersion of light (Answer)

Last Answer : D. Dispersion of light (Answer)

What do echo shadow and your reflection have in common?

Description : What do echo shadow and your reflection have in common?

Last Answer : s

What do echo shadow and your reflection have in common?

Description : What do echo shadow and your reflection have in common?

Last Answer : s

The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ----? A. 1120 ft B. 120 ft C. 56 ft (Answer) D. 100 ft E. None of these

Description : The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ----? A. 1120 ft B. 120 ft C. 56 ft (Answer) D. 100 ft E. None of these

Last Answer : C. 56 ft (Answer)

The sun and moon appear elliptical near the horizon due to (a) optical illusion (b) interference (c) refraction (d) actual change in shapes

Description : The sun and moon appear elliptical near the horizon due to (a) optical illusion (b) interference (c) refraction (d) actual change in shapes

Last Answer : Ans:(c)

Which of the following phenomenon helps to conclude that light is a transverse wave? (1) interference (2) diffraction (3) polarization (4) refraction

Description : Which of the following phenomenon helps to conclude that light is a transverse wave? (1) interference (2) diffraction (3) polarization (4) refraction

Last Answer : (3) polarization Explanation: The phenomena of interference and diffraction of light were successful beyond doubt to prove that light is a form of wave. But they failed to decide whether light ... light is a transverse wave was established only after the discovery of the phenomenon of polarization.

Which of the following are all errors associated with ADF? a. Selective availability, coastal refraction, night effect b. Night effect, quadrantal error, lane slip c. Mountain effect, station interference, static interference d. Selective availability, coastal refraction, quadrantal error

Description : Which of the following are all errors associated with ADF? a. Selective availability, coastal refraction, night effect b. Night effect, quadrantal error, lane slip c. Mountain effect, station interference, static interference d. Selective availability, coastal refraction, quadrantal error

Last Answer : c. Mountain effect, station interference, static interference

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

Light is normally incident on a thin soap film and is reflected. If the wavelength of this light is "L" and the index of refraction of the soap film is "N", complete destructive interference will occur for a film thickness of: w) L / 8N x) L / 4N y) L / 2N z) 3L / 4N

Description : Light is normally incident on a thin soap film and is reflected. If the wavelength of this light is "L" and the index of refraction of the soap film is "N", complete destructive interference will occur for a film thickness of: w) L / 8N x) L / 4N y) L / 2N z) 3L / 4N

Last Answer : ANSWER: Y -- L / 2N 

Which of the following phenomenon helps to conclude that light is a transverse wave? (1) interference (2) diffraction (3) polarisation (4) refraction

Description : Which of the following phenomenon helps to conclude that light is a transverse wave? (1) interference (2) diffraction (3) polarisation (4) refraction

Last Answer : polarisation

Production of beats is a result of the phenomenon of (a) Resonance (b) Interference (c) Reflection (d) Superposition

Description : Production of beats is a result of the phenomenon of (a) Resonance (b) Interference (c) Reflection (d) Superposition

Last Answer : Ans:(b)

The beautiful colour pattern exhibited by a peacock in its tail feathers are A. Selective absorption of light B. Selective reflection of light C. Interference of light D. Natural colour pattern of feathers

Description : The beautiful colour pattern exhibited by a peacock in its tail feathers are A. Selective absorption of light B. Selective reflection of light C. Interference of light D. Natural colour pattern of feathers

Last Answer : ANSWER: A

A mirage occurs because of – (1) Reflection by hot ground (2) Total internal reflection by layers of air (3) Interference of light (4) Diffraction of light

Description : A mirage occurs because of – (1) Reflection by hot ground (2) Total internal reflection by layers of air (3) Interference of light (4) Diffraction of light

Last Answer : (2) Total internal reflection by layers of air Explanation: A mirage is a naturally occurring optical phenomenon in which light rays are bent to produce a displaced image of distant objects or the ... -changing mirage. Cold air is denser than warm air and has therefore a greater refractive index.

The phenomenon which causes mirage is – (1) Interference (2) Diffraction (3) Polarisation (4) Total internal reflection

Description : The phenomenon which causes mirage is – (1) Interference (2) Diffraction (3) Polarisation (4) Total internal reflection

Last Answer : (4) Total internal reflection Explanation: Mirage is caused by total internal reflection in deserts where due to heating of the earth, refractive index of air near the surface of earth becomes lesser than ... ray of light coming from a distant object gets refracted from a denser to a rarer medium.

What is the phenomenon which established the transverse nature of light? (1) Reflection (2) Interference (3) Diffraction (4) Polarisation

Description : What is the phenomenon which established the transverse nature of light? (1) Reflection (2) Interference (3) Diffraction (4) Polarisation

Last Answer : (4) Polarisation Explanation: The phenomena which proves the transverse nature alight is polarization. Since the intensity of polarized light on passing through a tourmaline crystal changes, ... waves. Transverse waves are waves that are oscillating perpendicularly to the direction of propagation

A thin oil film on a water surface appears coloured because of – (1) reflection (2) interference (3) diffraction (4) polarization

Description : A thin oil film on a water surface appears coloured because of – (1) reflection (2) interference (3) diffraction (4) polarization

Last Answer : (2) interference Explanation: A thin oil film on a water surface appears coloured because of thin-film interference which involves the interference of light waves reflecting off the top surface of a film with the waves reflecting from the bottom surface.