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Physics - Electromagnetic Waves

Practise 30 AIIMS previous year questions on Electromagnetic Waves, compiled from papers spanning 2001 to 2018. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AIIMS tests.

Electromagnetic Waves has been asked in 16 of the 19 years of AIIMS papers analysed (2001–2019), with 30 questions in all. 83% of them were easy, 13% moderate and 3% tough. Most of its questions came from 2018, with 4 questions that year. In the last three years (2017–2019) it had 4 questions across 5 papers, about 0.8 per paper.

The chapter's 3 topics are not weighted equally: Electromagnetic Waves and Maxwell's equations (15 questions, 50%), X-Rays (12 questions, 40%), and Electromagnetic Spectrum (3 questions, 10%) have been asked the most. Electromagnetic Spectrum has produced the most tough questions (1).

  1. 1Assume that a radio station is about away from your location and the station operates at . How long does it take for an electromagnetic sign27 May, 2018Electromagnetic Spectrum
  2. 2Assertion : When an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy. Reason : I27 May, 2018X-Rays
  3. 3The charge of a parallel plate capacitor is varying as . The plates are very large and close together. Neglecting edge effects, the displace26 May, 2018Electromagnetic Waves and Maxwell's equations
  4. 4Assertion : The energy of X-ray photon is greater than that of light (visible) photon. Reason : X-ray photon in vacuum travels faster than l26 May, 2018X-Rays
  5. 5Assertion : The electromagnetic waves are transverse in nature. Reason : Waves of wavelength are radiowave and microwave.2016Electromagnetic Waves and Maxwell's equations
  6. 6Assertion : When a charged particle moves in a circular path. It produces electromagnetic wave. Reason : Charged particle has acceleration.2016Electromagnetic Waves and Maxwell's equations
  7. 7The temperature of an object that emits electromagnetic radiation must be2015Electromagnetic Waves and Maxwell's equations
  8. 8Assertion: Static crashes are heard on radio, when lightning flash occurs in the sky. Reason: Electromagnetic waves having frequency of radi2014Electromagnetic Waves and Maxwell's equations
  9. 9Astronomical wavelength increase due todoppler effect known as2013Electromagnetic Waves and Maxwell's equations
  10. 10Assertion : A laser beam of power can drill holes through a metal sheet, whereas a torch-light cannot. Reason : The frequency of laser light2013Electromagnetic Spectrum
  11. 11Assertion : Electromagnetic radiations exert pressure. Reason : Electromagnetic-waves carry both momentum and energy.2013Electromagnetic Waves and Maxwell's equations
  12. 12The frequency order for -rays -rays , rays is2012X-Rays
  13. 13Assertion : In electromagnetic waves electric field and magnetic field lines are perpendicular to each other. Reason : Electric field and ma2012Electromagnetic Waves and Maxwell's equations
  14. 14Assertion : Electromagnetic waves are transverse in nature Reason : The electric and magnetic fields of an e.m. wave are perpendicular to ea2010Electromagnetic Waves and Maxwell's equations
  15. 15Assertion : X-ray astronomy is possible only from satellites orbiting the earth. Reason : Efficiency of X-rays telescope is large as compare2010X-Rays
  16. 16Black holes in orbit around a normal star are detected from the earth due to the frictional heating of infalling gas into the black hole, wh2009X-Rays
  17. 17If and are the speeds of gamma rays, -rays and microwaves respectively in vacuum, then.2009Electromagnetic Waves and Maxwell's equations
  18. 18The velocity of electromagnetic radiation in a medium of permittivity \( _0\) and permeability \( _0\) is given by2008Electromagnetic Waves and Maxwell's equations
  19. 19Assertion : X-rays can penetrate through the flesh but not through the bones. Reason : The penetrating power of X-rays depends on voltage.2008X-Rays
  20. 20Which wavelength of sun is used finally as electric energy?2007Electromagnetic Waves and Maxwell's equations
  21. 21\( {CO}_2\) laser uses2007Electromagnetic Spectrum
  22. 22Assertion : Dipole oscillations produce electromagnetic waves. Reason : Accelerated charge produces electromagnetic waves.2007Electromagnetic Waves and Maxwell's equations
  23. 23Hard X-rays for the study of fractures in bones should have a minimum wavelength of . The accelerating voltage for electrons in X-ray machin2006X-Rays
  24. 24Assertion : Standard optical diffraction gratings cannot be used for discriminating between different -ray wavelengths. Reason : The grating2006X-Rays
  25. 25Solid targets of different elements are bombarded by highly en ergetic electron beams. The frequency (f) of the characteristic X-rays emitte2005X-Rays
  26. 26Assertion : Crystalline solids can cause X-rays to diffract. Reason : Interatomic distance in crystalline solids is of the order of .2004X-Rays
  27. 27Characteristic X-rays are produced due to2003X-Rays
  28. 28Velocity of light is equal to2002Electromagnetic Waves and Maxwell's equations
  29. 29Assertion : Quasar emits radiowaves more than radio galaxy. Reason : Quasar has very small size.2002Electromagnetic Waves and Maxwell's equations
  30. 30X-ray beams are affected by2001X-Rays

Frequently Asked Questions

1.How many questions are available for Electromagnetic Waves?

This chapter includes 30 questions compiled from AIIMS papers spanning 2001 to 2018.

2.Are these questions only from AIIMS, or from other exams too?

These are AIIMS questions specifically for the Electromagnetic Waves chapter. Questions from other exams like NEET or JIPMER are organised separately under their respective exam sections.

3.Is Electromagnetic Waves an important chapter for AIIMS Physics?

Electromagnetic Waves has appeared in 16 of the 19 years of AIIMS papers covered here, with 30 questions across 17 papers - about 2 per paper it appears in.

4.What is the difficulty level of Electromagnetic Waves questions in AIIMS?

Of the 30 questions analysed for this chapter, 83% are easy, 13% moderate and 3% tough. 2018 had the most, with 4 questions.

5.Which topics in Electromagnetic Waves should I focus on?

These topics have carried the most weightage in Electromagnetic Waves:

  • Electromagnetic Waves and Maxwell's equations - 15 questions (50%)
  • X-Rays - 12 questions (40%)
  • Electromagnetic Spectrum - 3 questions (10%)
  • Electromagnetic Spectrum has produced the most tough questions (1).
6.Is Electromagnetic Waves's weightage in AIIMS going up or down?

Across all 17 papers analysed, Electromagnetic Waves has averaged about 1.8 questions per paper. In the last three years (2017–2019), that average has fallen, at about 0.8 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.