NEET Physics: Waves — MCQ Test 1

Q6. A steel rod of length 1.2 m has a fundamental frequency of longitudinal vibrations of 2.5 kHz. What is the speed of sound in the rod?

Q7. Two waves \( y_1 = 6 \sin (4x - 12t) \) and \( y_2 = 6 \sin (4x - 12t + \pi) \) interfere. What is the amplitude of the resultant wave?

Q8. A string of length 2.4 m fixed at both ends has a wave speed of 96 m/s. What is the frequency difference between its third and first harmonics?

Q9. A wave \( y = 0.08 \sin (10x - 30t) \) reflects at a rigid boundary. What is the equation of the reflected wave?

Q10. A wave is described by \( y(x, t) = 0.04 \sin (20x - 50t) \), where \( x \) and \( y \) are in meters and \( t \) in seconds. What is the wavelength of the wave?

Q11. A string of length 3.6 m and mass 0.09 kg is under a tension of 160 N. What is the speed of a transverse wave on the string?

Q12. What is the key requirement for a wave to be classified as a progressive wave?

Q13. What is the nature of the wave produced by a vibrating tuning fork in air?

Q14. A string fixed at both ends has a length of 2 m and a wave speed of 60 m/s. What is the frequency of its first harmonic?

Q15. A steel rod of length 1.8 m has a fundamental frequency of longitudinal vibrations of 1.5 kHz. What is the speed of sound in the rod?

NEET Physics — Waves

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A string of length 2 m fixed at both ends has a wave speed of 60 m/s. What is the frequency of its third harmonic?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Waves. It contains 15 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Frequency, Harmonic, Frequencies, Transverse, Resonates, and Stationary.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A string of length 2 m fixed at both ends has a wave speed of 60 m/s. What is the frequency of its third harmonic?

  • A. 30 Hz
  • B. 60 Hz
  • C. 45 Hz
  • D. 90 Hz

Q2. Two waves of frequencies 450 Hz and 456 Hz produce beats. How many beats are heard in 5 seconds?

  • A. 24
  • B. 28
  • C. 32
  • D. 30

Q3. A string of length 2.4 m and mass 0.048 kg is under a tension of 300 N. What is the speed of a transverse wave on the string?

  • A. 110 m/s
  • B. 120 m/s
  • C. 122.5 m/s
  • D. 130 m/s

Q4. A pipe closed at one end resonates at 275 Hz with a speed of sound of 330 m/s. What is its length?

  • A. 0.25 m
  • B. 0.35 m
  • C. 0.4 m
  • D. 0.3 m

Q5. A stationary wave is given by \( y = 0.03 \sin (\frac{\pi x}{6}) \cos (80\pi t) \), where \( x \) and \( y \) are in meters and \( t \) in seconds. What is the distance between two consecutive nodes?

  • A. 4 m
  • B. 6 m
  • C. 8 m
  • D. 12 m

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