Subject: Science, asked on 30/1/12

## What is the difference between loudness and intensity.

Subject: Science, asked on 14/3/16

## Types of surface needed for reflection of sound waves are  - (a)smooth surface only (b) polished and smooth surface (c) polished and rough surface (d) rough and hard surface only

Subject: Science, asked on 30/9/13

## Important questions of this chapter sound

Subject: Science, asked on 8/3/14

## 1.what do you understand by 1u or 1amu.2.why is a bell provided with a big outer case?

Subject: Science, asked on 12/3/11

## what is the difference between Echo And Reverberation ?

Subject: Science, asked on 17/2/15

## A longitudinal wave of wavelength 1cm travels in air with a speed of 330m/sec. Calculate the frequency of the wave. Can this wave be heard by a normal human.

Subject: Science, asked on 23/2/15

## What r the factors on which the speed of sound depends? Pls ans any1.. experts... quickly..

Subject: Science, asked on 16/1/16

## For the wave shown in figure, the frequency and wavelength, if its speed is 320 m/s are ​

Subject: Science, asked on 13/2/16

## xam idea free download for class 9

Subject: Science, asked on 22/2/14

## Why is it that children under the age of 5 can hear sounds upto 25 kHz but adults cannot do so?

Subject: Science, asked on 8/1/13

## a person is listening to a tone of 500 Hz sitting at a distance of 450m from the source of the sound . What is the time interval between successive compressions from the source ?

Subject: Science, asked on 28/2/16

## define the following terms.. a)amplitude b)time period c)wavelength d)frequency e)rarefactions f)compression

Subject: Science, asked on 31/1/12

## why we cannot heard echo in small room?

Subject: Science, asked on 14/2/14

## differentiate between crest and trough with more than 3 points (

Subject: Science, asked on 12/3/13

## why are sound waves called mechanical waves?

Subject: Science, asked on 22/2/14

## Why does sound travel faster in Hydrogen than Oxygen?

Subject: Science, asked on 17/12/12

## DIFFERENCE BETWEEN INTENSITY AND LOUDNESS OF SOUND?/

Subject: Science, asked on 1/11/13

## Does light occupy space and has mass?

Subject: Science, asked on 31/12/12

## The blood pressure in humans is greater at the feet than at the brain. Why?

Subject: Science, asked on 9/1/14

## The roof and walls of the auditorium are generally covered with sound absorbent materials like compressed fibreboard or draperies. Why is it so?(

Subject: Science, asked on 31/12/12

## Explain the working and applications of sonar.

Subject: Science, asked on 6/2/20

## what is reciprocal of wavelength called

Subject: Science, asked on 1/2/11

## what are uses of infrasonic sound

Subject: Science, asked on 30/12/14

## Name three animals which can hear ultrasonic vibrations.

Subject: Science, asked on 5/2/13

## a stone is dropped from the top of a tower 500m high into a pond of water at the base of the tower . when is the splash heard ? g = 10m/s2 and speed of sound = 340m/s

Subject: Science, asked on 6/1/20

## Give 5 numericals solved for class 10 physics of chapter of chapter SOUND ?????

Subject: Science, asked on 5/2/13

## A person has a hearing range from 20Hz to 20KHz. what are the typical wavelength of sound waves in air corresponding to these two frequencies?(Speed of sound =344m/s)?

Subject: Science, asked on 20/1/11

## on what factor does the quality of sound depend?

Subject: Science, asked on 3/2/12

## why are the ceilings of concert halls made curved?

Subject: Science, asked on 3/1/14

## why would it be futile to attempt to detect sounds from other planets, even given the very best in audio detectors?

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