Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-diagram based-Hard-Class 11
Consider a diagram illustrating the propagation of sound waves in air, where regions of compression and rarefaction are shown. Which of the following best describes the effect of compression on the air molecules in the region?
A
The molecules are packed together, increasing density.
B
The molecules are spread apart, decreasing density.
C
The pressure in the region decreases.
D
The molecules remain stationary.
Correct Answer
Option A
Detailed Explanation
In a region of compression, the air molecules are packed together, leading to an increase in density. This is consistent with the NCERT context describing the change in density during compression.
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