GENERAL KNOWLEDGE

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GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum
A
1.8 km, 0.15 km
B
2.2 km, 0.20 km
C
2.8 km, 0.25 km
D
3.3 km, 0.30 km
Explanation: 

Detailed explanation-1: -∴ Dmin=(300)(6−6)=300 m=0. 3 km.

Detailed explanation-2: -It is produced from a vibrating body. The vibrating body causes the medium (water, air, etc.) around it to vibrate thus producing sound. The sound is produced when something vibrates .

Detailed explanation-3: -Sound is produced when something vibrates. The vibrating body causes the medium (water, air, etc.) around it to vibrate. These vibrations travel as longitudinal waves in air, which we hear as sound.

Detailed explanation-4: -Sound is produced when body vibrates. When the body vibrates it produces sound waves and this waves travel through the medium. If there is no medium, then the sound waves won’t propagate and sound waves will not reach us.

Detailed explanation-5: -Sound wave has different speed in different mediums because:different mediums has different density so that’s why speed is different(because speed of sound depends on density of mediums).

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