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NEST2019PhysicsWaves and Sound

A spring, fixed at one end, is connected to a steel wire of length L . The other end of the steel wire is connected to an AC source providing a sinusoidal signal of fixed frequency f . This stretches the spring and produces standing waves. The spring stretched by 18 cm produces a standing wave with four antinodes in the steel wire. The stretch of the spring which will produce a standing wave of three antinodes is

Options

  1. A16 cm
  2. B32 cm
  3. C24 cm
  4. D40 cm

Correct answer

B. 32 cm

Step-by-step solution

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