Velocity of sound in air does not change with the change of (1) Temperature of air (2) Pressure of air (3) Moisture content in air (4) Wind in the direction of propagation of sound

Velocity of sound in air does not change with the change of (1) Temperature of air (2) Pressure of air (3) Moisture content in air (4) Wind in the direction of propagation of sound
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Pressure of air
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Velocity of sound in air does not change with the change of – (1) Temperature of air (2) Pressure of air (3) Moisture content in air (4) Wind in the direction of propagation of sound

Description : Velocity of sound in air does not change with the change of – (1) Temperature of air (2) Pressure of air (3) Moisture content in air (4) Wind in the direction of propagation of sound

Last Answer : (2) Pressure of air Explanation: The speed of sound in an ideal gas is independent of frequency, but it weakly depends on frequency for all real physical situations. It is a function of the ... ideal gas. Sound speed is slightly dependent on pressure only because air is not quite an ideal gas.

Anemometer is used to measure – (1) wind direction (2) wind velocity (3) pressure gradient (4) wind speed and time

Description : Anemometer is used to measure – (1) wind direction (2) wind velocity (3) pressure gradient (4) wind speed and time

Last Answer : (2) wind velocity Explanation: An anemometer is a device for measuring wind speed, and is a common weather station instrument. The first known description of an anemometer was given by Leon Battista Alberti around 1450.

Anemometer is used to measure (1) wind direction (2) wind velocity (3) pressure gradient (4) wind speed and time

Description : Anemometer is used to measure (1) wind direction (2) wind velocity (3) pressure gradient (4) wind speed and time

Last Answer : wind velocity

Pick out the wrong statement: (A) Change in barometric pressure does not affect the relative humidity (B) In case of a packed tower, the operating velocity is about half of the flooding velocity, generally (C) 'Elution' means the desorption of the adsorbed solute by a solvent (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

Description : Pick out the wrong statement: (A) Change in barometric pressure does not affect the relative humidity (B) In case of a packed tower, the operating velocity is about half of the ... (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

Last Answer : (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

Velocity of sound in air does not depend on – (1) Density of air (2) Temperature of air (3) Pressure of air (4) Humidity of air

Description : Velocity of sound in air does not depend on – (1) Density of air (2) Temperature of air (3) Pressure of air (4) Humidity of air

Last Answer : (3) Pressure of air Explanation: Assuming air to be an ideal gas, the speed of sound depends on temperature only. As air temperature increases, so does the speed of sound and vice versa. ... air pressure because the air pressure and air density are proportional to each other at the same temperature.

Velocity of sound in air does not depend on (1) Density of air (2) Temperature of air (3) Pressure of air (4) Humidity of air

Description : Velocity of sound in air does not depend on (1) Density of air (2) Temperature of air (3) Pressure of air (4) Humidity of air

Last Answer :  Pressure of air

Humidity refers to (A) Temperature of the air (B) Pressure of the air (C) Moisture content of the air (D) Volume of the air

Description : Humidity refers to (A) Temperature of the air (B) Pressure of the air (C) Moisture content of the air (D) Volume of the air

Last Answer : Answer: Option C

The swing of a spinning cricket ball in air can be explained on the basis of – (1) Sudden change in wind direction. (2) Buoyancy of air. (3) Turbulence caused by wind. (4) Bernoulli's theorem.

Description : The swing of a spinning cricket ball in air can be explained on the basis of – (1) Sudden change in wind direction. (2) Buoyancy of air. (3) Turbulence caused by wind. (4) Bernoulli's theorem.

Last Answer : (3) Turbulence caused by wind. Explanation: The main theory of swing bowling surrounded turbulent and laminar airflow. Laminar air separates from the surface of the ball earlier than turbulent flow air, ... towards the back; inducing a greater lift force on the turbulent airflow side of the ball.

The swing of a spinning cricket ball in air can be explained on the basis of (1) Sudden change in wind direction. (2) Buoyancy of air. (3) Turbulence caused by wind. (4) Bernoulli’s theorem.

Description : The swing of a spinning cricket ball in air can be explained on the basis of (1) Sudden change in wind direction. (2) Buoyancy of air. (3) Turbulence caused by wind. (4) Bernoulli’s theorem.

Last Answer : Turbulence caused by wind.

The phenomenon of change in direction of light when it passes from one medium to another is called - (1) Propagation (2) Reflection (3) Refraction (4) Dispersion

Description : The phenomenon of change in direction of light when it passes from one medium to another is called - (1) Propagation (2) Reflection (3) Refraction (4) Dispersion

Last Answer : (3) Refraction Explanation: Refraction is the change in direction of wave propagation due to a change in its transmission medium. Due to the change of medium, the phase velocity of the wave is changed but its frequency remains constant.

The phenomenon of change in direction of light when it passes from one medium to another is called (1) Propagation (2) Reflection (3) Refraction (4) Dispersion

Description : The phenomenon of change in direction of light when it passes from one medium to another is called (1) Propagation (2) Reflection (3) Refraction (4) Dispersion

Last Answer : Refraction

Transpiration is least in (a) good soil moisture (b) high wind velocity (c) dry environment (d) high atmospheric humidity.

Description : Transpiration is least in (a) good soil moisture (b) high wind velocity (c) dry environment (d) high atmospheric humidity.

Last Answer : (d) high atmospheric humidity.

The sound energy per unit area at right angles to the propagation direction per unit time. A. Sound intensity B. Loudness C. Coherence D. Sound stress

Description : The sound energy per unit area at right angles to the propagation direction per unit time. A. Sound intensity B. Loudness C. Coherence D. Sound stress

Last Answer : A. Sound intensity

The velocity of sound in moist air is more than in dry air because the moist air has (1) less density than city air (2) less pressure than dry air (3) more pressure than dry air (4) more density than dry air

Description : The velocity of sound in moist air is more than in dry air because the moist air has (1) less density than city air (2) less pressure than dry air (3) more pressure than dry air (4) more density than dry air

Last Answer : (1) less density than city air Explanation: The density of dry air is more than that of moist air (when moisture is removed from air, its density. increases). The speed of sound in a medium is inversely ... root of its density. Therefore, the speed of sound in moist air is more than that in dry air.

The velocity of sound in moist air is more than in dry air because the moist air has (1) less density than dry air. (2) less pressure than dry air. (3) more pressure than dry air. (4) more density than dry air.

Description : The velocity of sound in moist air is more than in dry air because the moist air has (1) less density than dry air. (2) less pressure than dry air. (3) more pressure than dry air. (4) more density than dry air. 

Last Answer : less density than dry air.

The velocity of sound in air – (1) decreases with increase of temperature (2) increases with decrease of temperature (3) does not depend on temperature (4) decreases with decrease of temperature

Description : The velocity of sound in air – (1) decreases with increase of temperature (2) increases with decrease of temperature (3) does not depend on temperature (4) decreases with decrease of temperature

Last Answer : (4) decreases with decrease of temperature Explanation: Assuming air to be an ideal gas, the speed of sound c depends on temperature only, not on the pressure or density. As air ... to the individual air particles having extra kinetic energy at higher temperatures and lesser at lower temperatures.

The velocity of sound in air (1) decreases with increase of temperature (2) increases with decrease of temperature (3) does not depend on temperature (4) decreases with decrease of temperature

Description : The velocity of sound in air (1) decreases with increase of temperature (2) increases with decrease of temperature (3) does not depend on temperature (4) decreases with decrease of temperature

Last Answer :  decreases with decrease of temperature

Which one among the following doesn't have any effect on velocity of sound? (1) Pressure (2) Temperature (3) Humidity (4) Density

Description : Which one among the following doesn't have any effect on velocity of sound? (1) Pressure (2) Temperature (3) Humidity (4) Density

Last Answer : (3) Humidity Explanation: The speed of sound varies depending on the temperature, pressure, and density of the medium through which the sound waves travel. In most of the cases, it is density ... (or other material). The density of air is affected by atmospheric pressure, temperature, and altitude.

Which one among the following doesn't have any effect on velocity of sound ? (1) Pressure (2) Temperature (3) Humidity (4) Density

Description : Which one among the following doesn't have any effect on velocity of sound ? (1) Pressure (2) Temperature (3) Humidity (4) Density

Last Answer : Humidity

What is sensible cooling of air? A. the cooling in which sensible heat of air is removed in order to reduce temperature B. the cooling in which temperature of air is reduced without changing in its moisture content C. both a. and b. D. none of the above

Description : What is sensible cooling of air? A. the cooling in which sensible heat of air is removed in order to reduce temperature B. the cooling in which temperature of air is reduced without changing in its moisture content C. both a. and b. D. none of the above

Last Answer : ANSWER : C

Dew point temperature always gives an indication of the __________ of the moist air. (A) Dryness (B) Moisture content (C) Coolness (D) Latent heat

Description : Dew point temperature always gives an indication of the __________ of the moist air. (A) Dryness (B) Moisture content (C) Coolness (D) Latent heat

Last Answer : (B) Moisture content

Herbicide loss by volatilization increases as which of the following increases a). Vapour pressure b). Soil moisture content c). Soil temperature d). all

Description : Herbicide loss by volatilization increases as which of the following increases a). Vapour pressure b). Soil moisture content c). Soil temperature d). all

Last Answer : d). all

Speed of sound in air is unaffected by change in : (1) Pressure (2) Humidity (3) Temperature (4) Volume

Description : Speed of sound in air is unaffected by change in : (1) Pressure (2) Humidity (3) Temperature (4) Volume

Last Answer : (1) Pressure Explanation: The speed of sound in air depends on the density of air and the density of air depends on the temperature. The speed of sound is unaffected by pressure. If the atmospheric pressure changes, the speed of sound in air remains constant.

Speed of sound in air is unaffected by change in : (1) Pressure (2) Humidity (3) Temperature (4) Volume

Description : Speed of sound in air is unaffected by change in : (1) Pressure (2) Humidity (3) Temperature (4) Volume

Last Answer : Pressure

Which of the answers listed below best completes the statement: The rate at which any part of a wave travels from one place to another determines the wave's: w) propagation velocity x) period y) amplitude z) frequency

Description : Which of the answers listed below best completes the statement: The rate at which any part of a wave travels from one place to another determines the wave's: w) propagation velocity x) period y) amplitude z) frequency

Last Answer : ANSWER: W -- PROPAGATION VELOCITY

0 কত What is the velocity of sound in charged air at normal temperature and normal pressure ?

Description : 0 কত What is the velocity of sound in charged air at normal temperature and normal pressure ?

Last Answer : At a temperature of 0 ° C and normal pressure, the speed of sound in the charged air is 332 m / s.

An instrument to measure the velocity and find the direction of the wind?

Description : An instrument to measure the velocity and find the direction of the wind?

Last Answer : Anemometer.

The basic underlying principle of using a mist propagation system is that it: a. Keeps the propagation medium uniformly moist and supplies moisture to the base of the cuttings b. Keeps the plant material cool c. Cools the propagation medium to promote root formation and development d. Increases humidity around the cutting and reduces transpiration

Description : The basic underlying principle of using a mist propagation system is that it: a. Keeps the propagation medium uniformly moist and supplies moisture to the base of the cuttings b. ... medium to promote root formation and development d. Increases humidity around the cutting and reduces transpiration

Last Answer : Increases humidity around the cutting and reduces transpiration

The propagation of sound waves in a gas involves – (1) Adiabatic compression and rarefaction (2) Isothermal compression and rarefaction (3) Isochoric compression and rarefaction (4) Isobaric compression and rarefaction

Description : The propagation of sound waves in a gas involves – (1) Adiabatic compression and rarefaction (2) Isothermal compression and rarefaction (3) Isochoric compression and rarefaction (4) Isobaric compression and rarefaction

Last Answer : (1) Adiabatic compression and rarefaction Explanation: Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the ... . Through solids, however, it can be transmitted as both longitudinal waves and transverse waves.

The propagation of sound waves in a gas involves – (1) Adiabatic compression and rarefaction (2) Isothermal compression and rarefaction (3) Isochoric compression and rarefaction (4) Isobaric compression and rarefaction

Description : The propagation of sound waves in a gas involves – (1) Adiabatic compression and rarefaction (2) Isothermal compression and rarefaction (3) Isochoric compression and rarefaction (4) Isobaric compression and rarefaction

Last Answer : (1) Adiabatic compression and rarefaction Explanation: Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within ... is transmitted through gases, plasma, and liquids as longitudinal waves, also called compression waves.

The propagation of sound waves in a gas involves (1) adiabatic compression and rarefaction (2) isothermal compression and rarefaction (3) isochoric compression and rarefaction (4) isobaric compression and rarefaction

Description : The propagation of sound waves in a gas involves (1) adiabatic compression and rarefaction (2) isothermal compression and rarefaction (3) isochoric compression and rarefaction (4) isobaric compression and rarefaction

Last Answer : adiabatic compression and rarefaction

The swing of a spinning cricket ball in air can be explained on the basis of (a) Sudden change in wind direction (b) Buoyancy of air (c) Turbulence caused by wind (d) Bernoulli’s theorem

Description : The swing of a spinning cricket ball in air can be explained on the basis of (a) Sudden change in wind direction (b) Buoyancy of air (c) Turbulence caused by wind (d) Bernoulli’s theorem

Last Answer : Ans:(d)

Evaporation from water surfaces exposed to air is not dependent of the: w) velocity of the wind x) humidity y) temperature z) depth of the water

Description : Evaporation from water surfaces exposed to air is not dependent of the: w) velocity of the wind x) humidity y) temperature z) depth of the water 

Last Answer : ANSWER: Z -- DEPTH OF THE WATER 

Anemometer is an instrument meant for measuring (1) velocity (2) air masses (3) wind speed (4) temperature

Description : Anemometer is an instrument meant for measuring (1) velocity (2) air masses (3) wind speed (4) temperature

Last Answer :  wind speed

Name the instruments used for measuring each of the following: (i) Pressure (ii) Voltage (iii) Purity of milk (iv) Temperature (v) Velocity of wind

Description : Name the instruments used for measuring each of the following: (i) Pressure (ii) Voltage (iii) Purity of milk (iv) Temperature (v) Velocity of wind

Last Answer : Answers: (i). Barometer (ii). Voltmeter (iii). Lactometer (iv). Thermometer (v). Anemometer

Velocity of flame propagation in SI engine is maximum for a fuel air mixture which is (a) 10% richer than stoichiometric (b) Equal to stoichiometric (c) More than 10% richer than stoichiometric (d) 10% leaner than stoichiometric

Description : Velocity of flame propagation in SI engine is maximum for a fuel air mixture which is (a) 10% richer than stoichiometric (b) Equal to stoichiometric (c) More than 10% richer than stoichiometric (d) 10% leaner than stoichiometric

Last Answer : Ans :a

Compared to the velocity of propagation of waves in air, what is the velocity of propagation of waves in waveguides?

Description : Compared to the velocity of propagation of waves in air, what is the velocity of propagation of waves in waveguides?

Last Answer : Slower.

Pick out the wrong statement. (A) Heat transfer by radiation cannot occur across an absolute volume (B) In case of a shell and tube heat exchanger, the pressure drop through the shell is proportional to the number of times the fluid crosses the bundle between baffles (C) Propagation velocity for travel of heat radiation through vacuum is equal to the velocity of the light (D) The amount of heat involved in the condensation or vaporisation of 1 kg of a fluid is the same

Description : Pick out the wrong statement. (A) Heat transfer by radiation cannot occur across an absolute volume (B) In case of a shell and tube heat exchanger, the pressure drop through the shell is ... The amount of heat involved in the condensation or vaporisation of 1 kg of a fluid is the same

Last Answer : (A) Heat transfer by radiation cannot occur across an absolute volume

The distribution of particle speeds in an ideal gas at a given temperature.  a. velocity of propagation  b. escape velocity  c. Maxwell speed Distribution  d. terminal velocity

Description : The distribution of particle speeds in an ideal gas at a given temperature.  a. velocity of propagation  b. escape velocity  c. Maxwell speed Distribution  d. terminal velocity

Last Answer : Maxwell speed Distribution

If there is to be a change in velocity, there MUST be a change in w) speed only x) direction only y) either speed or direction z) both speed and direction

Description : If there is to be a change in velocity, there MUST be a change in w) speed only x) direction only y) either speed or direction z) both speed and direction

Last Answer : ANSWER: Y -- EITHER SPEED OR DIRECTION 

Dew point can be best defined as the: a. Absolute temperature at which air, upon heating, will evaporate moisture b. . Percentage of moisture that air can hold at a given temperature and pressure c. . Temperature that air will begin to evaporate moisture d. . Temperature at which air, upon cooling, becomes saturated, causing moisture to condense should the temperature drop further e. . Atmospheric pressure at which air will condense moisture

Description : Dew point can be best defined as the: a. Absolute temperature at which air, upon heating, will evaporate moisture b. . Percentage of moisture that air can hold at a given temperature ... to condense should the temperature drop further e. . Atmospheric pressure at which air will condense moisture

Last Answer : Answer: D

Berry splitting in citrus and strawberry is due to a. High temperature b. Low moisture c. High sunlight d. High air pressure

Description : Berry splitting in citrus and strawberry is due to a. High temperature b. Low moisture c. High sunlight d. High air pressure

Last Answer : High temperature

The velocity of sound is more in – (1) water (2) air (3) steel (4) wood

Description : The velocity of sound is more in – (1) water (2) air (3) steel (4) wood

Last Answer : (3) steel Explanation: Sound travels at different speeds depending on what it is traveling through. Of the three mediums (gas, liquid, and solid) sound waves travel the slowest through gases, ... liquids, and fastest through solids. They travel over 17 times faster through steel than through air.

In which medium, velocity of sound is maximum? (1) Metals (2) Air (3) Water (4) Polymer

Description : In which medium, velocity of sound is maximum? (1) Metals (2) Air (3) Water (4) Polymer

Last Answer : (1) Metals Explanation: The speed of sound is highest in solid. The speed of sound depends on the density of the medium through which it is travelling.

Velocity of the sound is minimum in - (1) Steel (2) Vacuum (3) Water (4) Air

Description : Velocity of the sound is minimum in - (1) Steel (2) Vacuum (3) Water (4) Air

Last Answer : (2) Vacuum Explanation: The speed of sound in a vacuum is zero meters per second, as sound cannot travel in a vacuum. Sound is a wave, which means it spreads through the vibration of particles in a medium, such as water or air.

The velocity of sound is more in (1) water (2) air (3) steel (4) wood

Description : The velocity of sound is more in (1) water (2) air (3) steel (4) wood

Last Answer : steel

Moisture loss is determined by the (A) Humidity of combustion air (B) Moisture content of fuel (C) Both (A) and (B) (D) The water formed by combustion reaction

Description : Moisture loss is determined by the (A) Humidity of combustion air (B) Moisture content of fuel (C) Both (A) and (B) (D) The water formed by combustion reaction

Last Answer : (C) Both (A) and (B)

Pick up the correct statement from the following: (A) O.M.C. refers to the moisture corresponding to the maximum point on the moisture content dry density curve (B) The line which shows moisture content dry density relation for soil containing a constant percentage of air voids, is known as air void line (C) The free fall of hammer for compaction is 30.5 cm (D) All the above

Description : Pick up the correct statement from the following: (A) O.M.C. refers to the moisture corresponding to the maximum point on the moisture content dry density curve (B) The line which shows moisture content dry ... void line (C) The free fall of hammer for compaction is 30.5 cm (D) All the above

Last Answer : (D) All the above

260 g of wet soil was taken in a pycnometer jar of weight 400 g in order to find the moisture content in the soil, with specific gravity of soil particles 2.75. The weight of soil and remaining water filled in pycnometer without air bubbles was 1415 g and the weight of pycnometer filled with water alone was 1275 g. The moisture content in the soil is (A) 24.2 % (B) 18.2 % (C) 53.8 % (D) None of these

Description : 260 g of wet soil was taken in a pycnometer jar of weight 400 g in order to find the moisture content in the soil, with specific gravity of soil particles 2.75. The weight of soil and remaining water filled in pycnometer without air ... is (A) 24.2 % (B) 18.2 % (C) 53.8 % (D) None of these

Last Answer : Answer: Option B