Physics
Grade-9
Easy
Question
Which of the following is incorrectly matched?
- Simple pendulum – periodic motion.
- Strings of a guitar – rectilinear motion.
- Blades of a food processor – circular motion.
- Falling of a stone – rectilinear motion.
Hint:
The string is fixed at two ends and is moving to and fro about its mean position.
The correct answer is: Strings of a guitar – rectilinear motion.
The string is fixed at two ends and is moving to and fro about its mean position. So, we can say that the motion is vibratory.
Particular components of guitar, drum and other musical instruments vibrates and produces sound.
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