NEET Questions Solved


If the velocity of sound in air is 336 m/s. The maximum length of a closed pipe that would produce a just audible sound will be 

(1) 3.2 cm

(2) 4.2 m

(3) 4.2 cm

(4) 3.2 m

(2) Minimum audible frequency = 20 Hz.

v4l=20l=3364×20=4.2m

Difficulty Level:

  • 13%
  • 50%
  • 29%
  • 10%