A boy standing at a distance of 17.2 m from a wall can hear the Echo of a clap just after 0.1 seconds if the temperature of the place is reduced by 10 degree Celsius will he be able to hear the Echo now justify the answer.
Answers
Answer:
yes he can hear the echo because as the temperature will be decrease the weight of air will be increased and air will come down and therefore there will be more medium for travelling of sound. And then he can be able to hear the echo perfectly.
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☞￣ᴥ￣☞ ANSWER :
→ KEY FACTS ABOUT ECHO :
• The minimum distance to hear echo at interval of time is 16.5 metre .
• minimum time to listen echo is 0.1 second .
→ JUSTIFICATION :
• BOTH THE KEY FACTS ABOUT ECO ARE APPLICABLE IN THE STATEMENT GIVEN .
AS IN HIGHER TEMPERATURE IT IS DIFFICULT FOR THE SOUND TO PROPAGATE BUT IF THE TEMPERATURE IS DECREASED THE SOUND PROPAGATION IS SMOOTH .
THUS THE BOY WILL BE ABLE TO LISTEN THE ECHO EVEN AT STANDING AT THE DISTANCE OF 17.2 M IF THE TEMPERATURE IS REDUCED .
HENCE JUSTIFIED .
HOPE IT HELPS ❣️｡.ﾟ+ ⟵(｡･ω･)