NEET Physics: Wave Optics — MCQ Test 15

Q6. What is the angular width of the central maximum in a single-slit diffraction pattern if the slit width is \( 5.0 \, \mu\text{m} \) and the wavelength is \( 650 \, \text{nm} \)?

Q7. What is the intensity at a point in a double-slit experiment where the path difference is \( 7\lambda/2 \), if the maximum intensity is \( 4I_0 \)?

Q8. What is the angular position of the third minimum in a single-slit diffraction pattern if the slit width is \( 10.0 \, \mu\text{m} \) and the wavelength is \( 600 \, \text{nm} \)?

Q9. What is the intensity of light after passing through three polaroids, with the first and third crossed and the second at \( 45^\circ \) to the first, if the initial unpolarized intensity is \( I_0 \)?

Q10. What is the phase difference corresponding to a path difference of \( 5\lambda/4 \) in a double-slit experiment?

NEET Physics — Wave Optics

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What is the direction of the electric field in a linearly polarized light wave relative to its propagation direction?

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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 Direction, Electric, Linearly, Polarized, Relative, and Propagation.

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 direction of the electric field in a linearly polarized light wave relative to its propagation direction?

  • A. Parallel
  • B. At 45°
  • C. Random
  • D. Perpendicular

Q2. What is the resultant amplitude of two coherent waves of amplitude \( a \) with a phase difference of \( 5\pi/2 \)?

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

Q3. What causes the intensity of light to remain conserved during interference despite the presence of dark fringes?

  • A. Speed increase
  • B. Frequency change
  • C. Amplitude doubling
  • D. Energy redistribution

Q4. What is the intensity at a point in a double-slit experiment where the path difference is \( 5\lambda/2 \), if the maximum intensity is \( 4I_0 \)?

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

Q5. What is the angular position of the third minimum in a single-slit diffraction pattern if the slit width is \( 4.0 \, \mu\text{m} \) and the wavelength is \( 400 \, \text{nm} \)?

  • A. 15°
  • B. 20°
  • C. 17.5°
  • D. 10°

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