GENERAL KNOWLEDGE

GK

PHYSICS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

If you tie a string around a doorknob, pull on the string slowly, and keep plucking it with your finger as you pull, what happens to the pitch?

A	As you tighten the string, the pitch gets lower.
B	The pitch stays the same.
C	As you tighten the string, the pitch gets higher.
D	You can’t tell unless you try it.

Explanation:

Detailed explanation-1: -Explain that the fast back-and-forth motion of the rubber band is called a vibration. When you pluck the rubber band, you make it vibrate.

Detailed explanation-2: -The long and thicker rubber bands will produce a lower pitch whereas the thinner and shorter rubber bands will produce sound with higher pitch.

Detailed explanation-3: -The pitch of sounds is determined by the frequency of vibration of the sound waves that produce them. Sound waves with a high frequency produce high-pitched noises, whereas sound waves with a low frequency produce low-pitched sounds. Pitch is a sound property that distinguishes between harsh and flat sounds.

Detailed explanation-4: -The sound you hear will increase in volume if the rubber band is pulled tightly. Sound waves will be absorbed by your hand when you pluck the rubber band. The rubber band will vibrate faster and produce a higher pitch.

There is 1 question to complete.