ICSE Class 10th Science Chapter 7 - sound Important Questions with Answers

In the above diagram Lata stands between two cliffs and claps her hands.

Determine the time taken by her to hear the first echo. Speed of sound in air 320 ms^-1.

Two sound waves X and Y have the same amplitude and the same wave pattern but their frequencies are 60 Hz and 120 Hz respectively, then ______.

Give one reason for the use of ultrasonic waves in echo depth sounding.

Name the waves used for echo depth sounding.

The human ear can detect continuous sounds in the frequency range from 20 Hz to 20,000 Hz. Assuming that the speed of sound in air is 330 ms?1 for all frequencies; calculate the wavelengths corresponding to the given extreme frequencies of the audible range

An enemy plane is at a distance of 300 km from a radar. In how much time the radar will be able to detect the plane? Take velocity of radio waves as 3 x 10⁸ ms^-1

How is the frequency of a stretched string related to its length?

How is the frequency of a stretched string related it’s tension?

Name the factor that determines Loudness of the sound heard.

Name the factor that determines Quality of the note