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JEE Main Wave Optics — practice questions — page 4

Explore 125 free Wave Optics questions in JEE Main Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Wave Optics questions and exercises with answers

Showing questions 91–120 of 125.

Foucault carried out that measurement in the year:Read the answer and worked solution →The famous interference experiment of 1801 was performed by:Read the answer and worked solution →Light was shown to be an electromagnetic wave by:Read the answer and worked solution →Light waves are electromagnetic waves that are:Read the answer and worked solution →A surface of constant phase in a wave is called a:Read the answer and worked solution →Wave energy travels in a direction to the wavefront that is:Read the answer and worked solution →The wavefronts from a point source are:Read the answer and worked solution →Far from the source, a small part of the wavefront is nearly:Read the answer and worked solution →Each point of a wavefront acts as a source of a:Read the answer and worked solution →The next position of a wavefront is found by drawing a common:Read the answer and worked solution →Huygens explained the missing backwave by taking the amplitude zero:Read the answer and worked solution →Two sources whose phase difference does not change are:Read the answer and worked solution →Coherent sources give an interference pattern that is:Read the answer and worked solution →Two separate light sources lighting one wall are:Read the answer and worked solution →When two sources are incoherent, their intensities:Read the answer and worked solution →The increase in wavelength from the Doppler effect is called:Read the answer and worked solution →Light with no preferred direction of vibration is:Read the answer and worked solution →A polaroid is made of long chain molecules that are:Read the answer and worked solution →True or false on wave opticsRead the answer and worked solution →Match each idea to its scientistRead the answer and worked solution →Type the yearRead the answer and worked solution →Build the next wavefrontRead the answer and worked solution →Coherent or incoherentRead the answer and worked solution →Quick picks on wave opticsRead the answer and worked solution →Fill the gaps on wave opticsRead the answer and worked solution →Spot the one that does not fitRead the answer and worked solution →Light passes from air to glass ($n = 1.5$). Brewster's angle is:Read the answer and worked solution →HUYGENS' PRINCIPLE states that every point on a wavefront acts as a:Read the answer and worked solution →BREWSTER'S LAW for the polarising angle θ_B relates to the refractive index n as:Read the answer and worked solution →In single-slit diffraction, the central maximum is:Read the answer and worked solution →

Worked practice questions

Foucault carried out that measurement in the year:

  1. 1678
  2. 1637
  3. 1850
  4. 1801
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Correct answer: C. 1850

1. The wave theory had waited a long time for direct support. 2. The speed of light in water was measured and found smaller. 3. The year of that experiment was 1850. _Source: syllabus Physics Part II, Chapter 10, Wave Optics._

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The famous interference experiment of 1801 was performed by:

  1. Isaac Newton
  2. James Maxwell
  3. Leon Foucault
  4. Thomas Young
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Correct answer: D. Thomas Young

1. Interference is a pattern only waves can produce. 2. The experiment firmly established the wave nature of light. 3. Thomas Young performed it in 1801. _Source: syllabus Physics Part II, Chapter 10, Wave Optics._

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Light was shown to be an electromagnetic wave by:

  1. Maxwell
  2. Huygens
  3. Newton
  4. Young
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Correct answer: A. Maxwell

1. A set of equations described the laws of electricity and magnetism. 2. From them came a wave equation with the speed of light in it. 3. Maxwell put forward this electromagnetic theory of light. _Source: syllabus Physics Part II, Chapter 10, Wave Optics._

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