Home
Class 10
PHYSICS
A boy standing in front of a wall at a d...

A boy standing in front of a wall at a distance of 85 m produces 2 claps per second. He notices that the sound of his clapping coincides with the echo. The echo is heard only once when clapping is stopped. Calculate the speed of sound.

Text Solution

AI Generated Solution

To solve the problem, we need to calculate the speed of sound based on the information provided. Here’s the step-by-step solution: ### Step 1: Understand the situation The boy is standing 85 meters away from a wall and produces 2 claps per second. He hears the echo of his clap coincide with the sound of his next clap. ### Step 2: Determine the time interval for the echo Since the boy produces 2 claps per second, the time interval between each clap is: \[ ...
Promotional Banner

Topper's Solved these Questions

  • SOUND

    ICSE|Exercise EXERCISE -7(A)|20 Videos
  • SOUND

    ICSE|Exercise EXERCISE -7(A) (MULTIPLE CHOICE TYPE)|2 Videos
  • SIMPLE MACHINES

    ICSE|Exercise DIAGRAM BASED MCQ|5 Videos
  • SPECIMEN PAPER (SOLVED)

    ICSE|Exercise SECTION II|78 Videos

Similar Questions

Explore conceptually related problems

A boy stands 60 m in front of a tall wall and claps. The boy continues to clap every time an echo is heard. Another boy finds that the time taken between the first and fifty-first clap is 18 s. Calculate the speed of sound.

A soldier walks towards a high wall taking 120 steps per minute. When he is at a distance of 90 m from the wall he observes that echo of step coincides with the next step. The speed of sound must be

A person standing at a distance x in front of a cliff fires a gun. Another person B standing behind the person A at distance y from the cliff hears two sounds of the fired shot after 2s and 3s respectively. Calculate x and y (take speed of sound 320 m s^(-1) ).

A man standing in front of a wall produces a sound and hears an echo after 3 s. He walks .X. m away from the wall and produces the same sound. Now he hears an echo after 5.25 s. Calculate distance he walked away from the wall. (Speed of sound in air is 340 m/s)

A tuning fork P of unknows frequency gives 7 beats in 2 seconds with another tuning fork Q . When Q runs towards a wall with a speed of 5 m//s it gives 5 beats per second with its echo. On loading P with wax, it gives 5 beats per second with Q . What is the frequency of P ? Assume speed of sound = 332 m//s .

A violin player riding on a slow train plays a 440 Hz note. Another violin player standing near the track plays the same note. When the two are close by and the train approaches the person on the ground, he hears 4'0 beats per second. The speed of sound in air = 340 ms^-1 (a) Calculate the speed of the train. (b) What beat frequency is heard by the player in the train ?

A person standing between two vertical cliffs and 480 m from the nearest cliff shouts. He hears the first echo after 3 s and the second echo 2 s later. Calculate : The speed of sound.

A man standing 25 m away from a wall produces a sound and receives the reflected sound. Calculate the time after which he receives the reflected sound if the speed of sound in air is 350 m s^(-1) .