Physics Circle home Student Login

Home›Chapters›Wave Motion PYQs›Speed of Waves›Question 38

NEET 1993 (AIPMT) · Speed of Waves

Speed of Waves question from NEET 1993 (AIPMT)

Q38NEET 1993 · AIPMTEasy

Speed of Waves

The temperature at which the speed of sound becomes double as was at 27∘C27^\circ\text{C} is

Show answer and solution

Answer: (c)

  1. v∝Tv \propto \sqrt{T} (kelvin), so doubling vv needs T′=4TT' = 4T.
  2. T′=4×300=1200 K=927∘CT' = 4 \times 300 = 1200\ \text{K} = 927^\circ\text{C}
  3. So the answer is (c) 927∘927^\circC.
Report a mistake

More questions on Speed of Waves