NEET Physics: Wave Optics — MCQ Test 14

Q6. What is the angular position of the first minimum in a single-slit diffraction pattern if the slit width is \( 10.0 \, \mu\text{m} \) and the wavelength is \( 500 \, \text{nm} \)?

Q7. Why does the interference pattern from two slits vanish if one slit is covered?

Q8. In a double-slit experiment, if \( \lambda = 510 \, \text{nm} \), \( d = 0.3 \, \text{mm} \), and \( D = 1.5 \, \text{m} \), what is the distance of the second bright fringe from the central maximum?

Q9. What is the condition for destructive interference in a double-slit experiment?

Q10. What is the intensity of light after passing through two polaroids with pass-axes at \( 75^\circ \), if the initial unpolarized intensity is \( I_0 \)?

NEET Physics — Wave Optics

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What is the condition for constructive interference 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 Condition, Constructive, Interference, Experiment, Reflected, and Wavefront.

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 condition for constructive interference in a double-slit experiment?

  • A. Path difference = \( \left(n + \frac{1}{2}\right)\lambda \)
  • B. Path difference = \( n\lambda \)
  • C. Phase difference = \( \pi \)
  • D. Phase difference = \( \frac{\pi}{2} \)

Q2. Why does the reflected wavefront from a plane surface maintain the same angle as the incident wavefront?

  • A. Frequency doubles
  • B. Amplitude decreases
  • C. Geometric symmetry of wavelets
  • D. Wavelength changes

Q3. What property of light waves enables the formation of a stable interference pattern when split from a single source?

  • A. High amplitude
  • B. Variable frequency
  • C. Coherence
  • D. Polarization

Q4. In a double-slit experiment, if \( \lambda = 450 \, \text{nm} \), \( d = 0.15 \, \text{mm} \), and \( D = 1.5 \, \text{m} \), what is the fringe width?

  • A. 4.5 mm
  • B. 3.0 mm
  • C. 6.0 mm
  • D. 9.0 mm

Q5. What is the frequency of light with a wavelength of \( 595 \, \text{nm} \) in air, given the speed of light in air is \( 3.0 \times 10^8 \, \text{m/s} \)?

  • A. \( 6.52 \times 10^{14} \, \text{Hz} \)
  • B. \( 5.04 \times 10^14 \, \text{Hz} \)
  • C. \( 5.26 \times 10^14 \, \text{Hz} \)
  • D. \( 4.41 \times 10^14 \, \text{Hz} \)

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