NEET Physics: Wave Optics — MCQ Test 2

Q6. What is the intensity of light after passing through two polaroids with pass-axes at \( 60^\circ \), if the initial unpolarized intensity is \( I_0 \)?

Q7. What is the speed of light in a medium with refractive index 1.3, given the speed in vacuum is \( 3.0 \times 10^8 \, \text{m/s} \)?

Q8. What is the effect on the energy of a light wave when its speed decreases in a denser medium?

Q9. What is the shape of the wavefront after a plane wave reflects off a plane mirror?

Q10. What is the angular position of the fourth minimum in a single-slit diffraction pattern if the slit width is \( 5.0 \, \mu\text{m} \) and the wavelength is \( 500 \, \text{nm} \)?

Q11. What is the intensity of light after passing through two polaroids with their pass-axes perpendicular to each other, if the initial intensity is \( I_0 \)?

Q12. What happens to the frequency of light when it refracts from air into water?

Q13. In a single-slit diffraction pattern, what happens to the intensity of secondary maxima as their order increases?

Q14. What is the distance of the sixth bright fringe from the central maximum in a double-slit experiment if \( \lambda = 470 \, \text{nm} \), \( d = 0.4 \, \text{mm} \), and \( D = 2.0 \, \text{m} \)?

Q15. When a plane wave reflects off a plane surface, what is the relationship between the angle of incidence and the angle of reflection?

NEET Physics — Wave Optics

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What property of light waves causes the bending of rays around corners in a diffraction 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 15 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 Property, Diffraction, Experiment, Frequency, Wavelength, and Refractive.

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 property of light waves causes the bending of rays around corners in a diffraction experiment?

  • A. Wave nature
  • B. High speed
  • C. Constant frequency
  • D. Polarization

Q2. What is the frequency of light with a wavelength of \( 630 \, \text{nm} \) in air, given the speed of light in air is \( 3.0 \times 10^8 \, \text{m/s} \)?

  • A. \( 5.56 \times 10^{14} \, \text{Hz} \)
  • B. \( 4.76 \times 10^{14} \, \text{Hz} \)
  • C. \( 5.0 \times 10^{14} \, \text{Hz} \)
  • D. \( 6.25 \times 10^{14} \, \text{Hz} \)

Q3. What is the speed of light in a medium with refractive index 1.6, given the speed in vacuum is \( 3.0 \times 10^8 \, \text{m/s} \)?

  • A. \( 1.875 \times 10^8 \, \text{m/s} \)
  • B. \( 2.31 \times 10^8 \, \text{m/s} \)
  • C. \( 1.5 \times 10^8 \, \text{m/s} \)
  • D. \( 2.07 \times 10^8 \, \text{m/s} \)

Q4. Why does the intensity of light transmitted through three polaroids reach a maximum when the middle one is at 45° to the crossed first and third polaroids?

  • A. Frequency alignment
  • B. Wavelength matching
  • C. Amplitude doubling
  • D. Maximum projection of polarization

Q5. What ensures that a convex lens can focus light from a plane wave into a single point?

  • A. Differential delay across the lens
  • B. Increase in light speed
  • C. Uniform amplitude
  • D. Change in frequency

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