NEET Physics: Wave Optics — MCQ Test 7

Q6. What happens to the fringe width in a double-slit experiment if both the slit separation and screen distance are doubled?

Q7. Why does the intensity of light remain unaffected by changes in its speed during refraction?

Q8. What happens to the fringe width in a double-slit experiment if the slit separation is reduced to one-third?

Q9. What is the path difference for the first dark fringe in a double-slit experiment?

Q10. What is the distance of the second bright fringe from the central maximum in a double-slit experiment if \( \lambda = 670 \, \text{nm} \), \( d = 0.6 \, \text{mm} \), and \( D = 1.8 \, \text{m} \)?

NEET PhysicsWave Optics

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Why is the backwave not observed in the reflection of light according to the wave model?

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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 Backwave, Observed, Reflection, According, Experiment, and Distance.

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. Why is the backwave not observed in the reflection of light according to the wave model?

  • A. Amplitude is zero in the backward direction
  • B. Light travels only forward
  • C. Reflection cancels the backwave
  • D. Frequency doubles in reflection

Q2. What happens to the fringe width in a double-slit experiment if the distance between the slits and the screen is tripled?

  • A. Halves
  • B. Remains the same
  • C. Doubles
  • D. Triples

Q3. What characteristic of light waves allows polarization to occur, distinguishing them from sound waves?

  • A. Transverse nature
  • B. High frequency
  • C. Longitudinal nature
  • D. Variable amplitude

Q4. What property of light ensures that the time taken from an object point to its image point is the same along any ray path in a lens system?

  • A. Frequency
  • B. Equal travel time along rays
  • C. Amplitude
  • D. Wavelength

Q5. Why does light exhibit polarization only in specific directions when passing through a polaroid?

  • A. Wavelength variation
  • B. Speed reduction
  • C. Frequency alignment
  • D. Electric field alignment

+ 5 more questions in the actual test

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