NEET Physics: Wave Optics — MCQ Test 18

Q6. What is the angular position of the second secondary maximum in a single-slit diffraction pattern if the slit width is \( 7.0 \, \mu\text{m} \) and the wavelength is \( 560 \, \text{nm} \)?

Q7. What is the distance of the first bright fringe from the central maximum in a double-slit experiment if \( \lambda = 620 \, \text{nm} \), \( d = 0.3 \, \text{mm} \), and \( D = 1.2 \, \text{m} \)?

Q8. What is the wavelength of light in a medium with refractive index 1.25 if its wavelength in air is \( 625 \, \text{nm} \)?

Q9. What is the resultant amplitude of two coherent waves of amplitude \( a \) with a phase difference of \( 7\pi/2 \)?

Q10. In a double-slit experiment, if \( \lambda = 460 \, \text{nm} \), \( d = 0.2 \, \text{mm} \), and \( D = 2.0 \, \text{m} \), what is the distance of the third bright fringe from the central maximum?

NEET Physics — Wave Optics

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What is the angular position of the first secondary maximum in a single-slit diffraction pattern if the slit width is \( 6.0 \, \mu\text{m} \) and the wavelength is \( 600 \, \text{nm} \)?

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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 Position, Secondary, Diffraction, Wavelength, 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. What is the angular position of the first secondary maximum in a single-slit diffraction pattern if the slit width is \( 6.0 \, \mu\text{m} \) and the wavelength is \( 600 \, \text{nm} \)?

  • A. 5.7°
  • B. 10°
  • C. 8.6°
  • D. 15°

Q2. What is the fringe width in a double-slit experiment if \( \lambda = 660 \, \text{nm} \), \( d = 0.3 \, \text{mm} \), and \( D = 1.5 \, \text{m} \)?

  • A. 3.3 mm
  • B. 2.2 mm
  • C. 4.4 mm
  • D. 6.6 mm

Q3. What is the distance of the first dark fringe from the central maximum in a double-slit experiment if \( \lambda = 650 \, \text{nm} \), \( d = 0.5 \, \text{mm} \), and \( D = 1.0 \, \text{m} \)?

  • A. 0.5 mm
  • B. 1.0 mm
  • C. 0.65 mm
  • D. 0.8 mm

Q4. In a single-slit diffraction pattern, what happens to the central maximum’s width if the wavelength is reduced to one-third?

  • A. Triples
  • B. Doubles
  • C. Remains the same
  • D. Reduces to one-third

Q5. What is the intensity of light in the photon picture, according to the wave optics concept?

  • A. Amplitude of the wave
  • B. Square of the amplitude
  • C. Frequency of the wave
  • D. Number of photons per unit area per unit time

+ 5 more questions in the actual test

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