Answer: 32 °C.
- A 25 °C
- B 32 °C
- C 45 °C
- D 18 °C
Correct answer: B. 32 °C
Explanation: v ∝ √T(K): T = 288 × (350/340)2 ≈ 305 K ≈ 32 °C.
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.