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⚛️ Physics  ·  Waves  ·  NEET & JEE

Speed of sound in a gas is proportional to:

Answer: sqrt(Temperature).

  • A Temperature
  • B sqrt(Temperature)
  • C 1/Temperature
  • D Temperature<sup>2</sup>

Correct answer: B. sqrt(Temperature)

Explanation: v = sqrt(gamma*R*T/M). Speed is proportional to sqrt(T) (absolute temperature).

Standing Wave: Nodes and Antinodes (Open Pipe, 2nd Harmonic)nodenodenodeantinodeantinodeSolid and dashed lines show the string/air column at two instants - nodes never move

A standing wave forms from two identical waves travelling in opposite directions and interfering; nodes (always zero displacement) and antinodes (maximum displacement) stay fixed in place, unlike a travelling wave where the whole pattern moves.

Concept context

Wave types, superposition, standing waves, Doppler effect, and sound intensity.

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