NEET Physics: Waves — MCQ Test 2

Q6. What happens to the speed of a transverse wave on a string if the tension is doubled while keeping the linear mass density constant?

Q7. A pipe closed at one end has a length of 0.68 m and a speed of sound of 340 m/s. What is the frequency of its third harmonic?

Q8. A wave \( y = 0.07 \sin (25x - 50t) \) reflects at a rigid boundary. What is the equation of the reflected wave?

Q9. A transverse wave on a string has a tension of 150 N and a linear mass density of 0.02 kg/m. What is the frequency if the wavelength is 2.5 m?

Q10. A pipe closed at one end has a length of 0.36 m and a speed of sound of 324 m/s. What is the frequency of its third harmonic?

Q11. For a standing wave in a pipe open at both ends, which statement is true about the harmonic frequencies?

Q12. A string of length 2.1 m fixed at both ends has a wave speed of 63 m/s. What is the frequency of its fifth harmonic?

Q13. Which statement best describes the energy in a standing wave?

Q14. A string of mass 0.05 kg and length 5 m is under tension. If the speed of a transverse wave is 100 m/s, what is the tension?

Q15. Two waves of frequencies 520 Hz and 526 Hz interfere. How many beats are heard in 10 seconds?

NEET Physics — Waves

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A pipe open at both ends has a length of 0.65 m and a speed of sound of 340 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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Medium
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Key concepts covered in this specific test include Frequency, Harmonic, Longitudinal, Amplitude, Identical, and Undergoing.

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 pipe open at both ends has a length of 0.65 m and a speed of sound of 340 m/s. What is the frequency of its third harmonic?

  • A. 750 Hz
  • B. 785 Hz
  • C. 800 Hz
  • D. 820 Hz

Q2. A longitudinal wave in a medium has a speed of 1500 m/s and a bulk modulus of 2.25 × 10⁹ Pa. What is the density of the medium?

  • A. 900 kg/m³
  • B. 950 kg/m³
  • C. 1000 kg/m³
  • D. 1050 kg/m³

Q3. A copper rod of density 8960 kg/m³ has a speed of sound of 3600 m/s. What is its Young’s modulus?

  • A. 1.0 × 10¹¹ Pa
  • B. 1.1 × 10¹¹ Pa
  • C. 1.16 × 10¹¹ Pa
  • D. 1.2 × 10¹¹ Pa

Q4. What happens to the amplitude of two identical waves undergoing destructive interference when their phase difference is \( \pi \) radians?

  • A. Becomes zero
  • B. Doubles
  • C. Remains unchanged
  • D. Halves

Q5. A transverse wave on a string is described by \( y(x, t) = 0.04 \sin (60x - 15t) \), where \( x \) and \( y \) are in meters and \( t \) in seconds. What is the speed of the wave?

  • A. 0.15 m/s
  • B. 0.25 m/s
  • C. 0.35 m/s
  • D. 0.45 m/s

+ 10 more questions in the actual test

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