NEET Physics: Wave Optics — MCQ Test 22

Q6. Why does the wave nature of light allow it to produce a pattern of bright and dark regions when passing through a narrow slit?

Q7. What is the angular position of the first minimum in a single-slit diffraction pattern if the slit width is \( 15.0 \, \mu\text{m} \) and the wavelength is \( 750 \, \text{nm} \)?

Q8. What is the path difference for the sixth dark fringe in a double-slit experiment?

Q9. What causes the intensity of light to vary sinusoidally with angle when passing through two polaroids?

Q10. What is the phase difference for destructive interference in a double-slit experiment when the path difference is \( \lambda \)?

NEET Physics — Wave Optics

Free MCQ Test 22 of 22

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What is the path difference for the fourth bright fringe in a double-slit experiment?

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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 Wave Optics. 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 Difference, Experiment, Resultant, Amplitude, Coherent, and Intensity.

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. What is the path difference for the fourth bright fringe in a double-slit experiment?

  • A. \( 3\lambda \)
  • B. \( 4\lambda \)
  • C. \( \frac{7\lambda}{2} \)
  • D. \( 2\lambda \)

Q2. What is the resultant amplitude of two coherent waves of amplitude \( a \) with a phase difference of \( 4\pi \)?

  • A. \( a \)
  • B. \( 0 \)
  • C. \( a\sqrt{2} \)
  • D. \( 2a \)

Q3. What is the intensity at a point in a double-slit experiment where the path difference is \( \lambda/3 \), if the maximum intensity is \( 4I_0 \)?

  • A. \( 2I_0 \)
  • B. \( 4I_0 \)
  • C. \( I_0 \)
  • D. \( 0 \)

Q4. What causes the intensity to vary when a second polaroid is rotated in front of another polaroid through which unpolarized light has passed?

  • A. Change in wavelength
  • B. Variation in electric field component
  • C. Increase in frequency
  • D. Decrease in speed

Q5. What is the condition for coherence in a double-slit experiment?

  • A. Random phase difference
  • B. Different frequencies
  • C. Different amplitudes
  • D. Constant phase difference

+ 5 more questions in the actual test

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