Which one of the following statements is correct?
- AThe velocity of sound in air increases with the increase of temperatureCorrect
- BThe velocity of sound in air is independent of pressure
- CThe velocity of sound in air decreased as the humidity increases
- DThe velocity of sound in air is not affected by the change in amplitude and frequency
Explanation
The velocity of sound in air increases with the increase of temperature. Higher temperatures increase the kinetic energy of air molecules, facilitating faster sound transmission. The relationship follows the formula: velocity is proportional to the square root of the absolute temperature.
Option C is incorrect because sound actually travels faster in humid air, not slower. Water vapor molecules are lighter than nitrogen and oxygen molecules, making humid air less dense.
Options B and D are also scientifically accurate: velocity of sound is independent of pressure at constant temperature, and velocity depends on the medium properties, not on amplitude or frequency.
Related questions
More UPSC Prelims practice from the same subject and topic.
- Prelims 2003GS1science-and-technology
With reference to the work of human kidney, consider the following statements: 1. After the waste is removed in the kidney, the cleaner blood is sent back through renal artery. 2. From Bowman’s capsul…
- Prelims 2003GS1science-and-technology
Consider the following statements: 1. Steam at 100° C and boiling water at 100° C contain same amount of heat. 2. Latent heat of fusion of ice is equal to the latent heat of vaporization of water. 3. …
- Prelims 2003GS1science-and-technology
Consider the following statements: A 4-wheel vehicle moving a sharp circular path at high speed will 1. Overturn about its outer wheels 2. Overturn about its inner wheels 3. Skid outwards 4. Skid inwa…
- Prelims 2003GS1science-and-technology
Four different candles, which can last for 5 hours, 4 hours. 3 hours and 2 hours of burning, respectively, are lit in a room at the same instant and allowed to burn till such time that the three candl…
- Prelims 2003GS1science-and-technology
Which one of the following statements is correct?
- Prelims 2003GS1science-and-technology
If the radius of the earth were shrunk by one per cent, its mass remaining the same, the value of ‘g’ on the earth’s surface would