NEET Physics: Waves — MCQ Test 20

Q6. A transverse wave on a string has a tension of 225 N and a linear mass density of 0.025 kg/m. What is the wavelength if the frequency is 30 Hz?

Q7. A pipe closed at one end has a length of 0.25 m. What is the frequency of its third harmonic if the speed of sound is 340 m/s?

Q8. A string of length 2.4 m fixed at both ends has a wave speed of 72 m/s. What is the frequency of its fifth harmonic?

Q9. Two strings produce beats of 8 Hz. One has a frequency of 440 Hz. When the tension in the second string is increased, the beat frequency becomes 6 Hz. What was the original frequency of the second string?

Q10. A stationary wave on a string is given by \( y = 0.08 \sin (2\pi x) \cos (100\pi t) \), where \( x \) and \( y \) are in meters and \( t \) in seconds. What is the distance between two consecutive nodes?

NEET Physics — Waves

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A stationary wave on a string fixed at both ends has a wavelength of 0.6 m and a frequency of 100 Hz. What is the wave speed?

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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 10 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 Stationary, Wavelength, Frequency, Interfere, Amplitude, and Resultant.

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 stationary wave on a string fixed at both ends has a wavelength of 0.6 m and a frequency of 100 Hz. What is the wave speed?

  • A. 50 m/s
  • B. 55 m/s
  • C. 65 m/s
  • D. 60 m/s

Q2. Two waves \( y_1 = 3 \sin (10x - 20t) \) and \( y_2 = 3 \sin (10x - 20t + \frac{\pi}{4}) \) interfere. What is the amplitude of the resultant wave?

  • A. 3 m
  • B. 5.5 m
  • C. 6 m
  • D. 4.5 m

Q3. A pipe 0.5 m long, open at both ends, resonates with a 340 Hz source. What is the harmonic number if the speed of sound is 340 m/s?

  • A. 1
  • B. 2
  • C. 3
  • D. 4

Q4. A pipe closed at one end has a length of 0.85 m and resonates at its second harmonic with a speed of sound of 340 m/s. What is the frequency?

  • A. 200 Hz
  • B. 250 Hz
  • C. 300 Hz
  • D. 350 Hz

Q5. A string of length 2.5 m and mass 0.025 kg has a fundamental frequency of 40 Hz. What is the tension in the string?

  • A. 350 N
  • B. 375 N
  • C. 425 N
  • D. 400 N

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