1.

While performing an experiment on verifying the laws of reflection of sound, the 'reflected sound' can be detected better by keeping one ear :(1) near the end of the tube and keeping the other ear closed(2) near the end of the tube and keeping the other ear open(3) at about 5 cm from the end of the tube and keeping the other ear closed(4) at about 5 cm from the end of the tube and keeping the other ear open

Answer» While performing an experiment on verifying the laws of reflection of sound, the 'reflected sound' can be detected better by keeping one ear :

(1) near the end of the tube and keeping the other ear closed

(2) near the end of the tube and keeping the other ear open

(3) at about 5 cm from the end of the tube and keeping the other ear closed

(4) at about 5 cm from the end of the tube and keeping the other ear open


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