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Previous Year Physics Question Papers (with solutions) of Kerala State Syllabus of Higher Secondary Examinations. Chapter Name: ELECTROMAGNETIC WAVES
Previous Year Questions of March Examinations from 2010 to 2020
Chapter Name: ELECTROMAGNETIC WAVES
Q.1 Score: 2 Year: 2010_March_SY
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It was James Clark Maxwell who modified Amperes Circuital Theorem by introducing the concept of displacement current.
a) What do you mean by displacement current?
b) The SI unit of Є0 dΦE/dt is
(a) volt (b) ohm (c) ampere (d) henry
Q.2 Score: 2 Year: 2011_March_SY
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Name the electromagnetic waves used for the following applications.
a) Imaging of bones of human body.
b) Mobile phone communication.
c) Remote control of T.V. sets.
d) For sterilizing surgical instruments.
Q.3 Score: 2 Year: 2012_March_SY
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The orderly distribution of electromagnetic radiations according to their wavelength or frequency is called electromagnetic spectrum which
i) is used for studying crystal structure.
ii) is absorbed by the ozone layer in the atmosphere.
iii) produces greenhouse effect.
iv) used in medicine to destroy cancer cells.
Q.4 Score: 3 Year: 2013_March_SY
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Electromagnetic spectrum is an ordinary arrangement of electromagnetic radiations in the ascending order of frequency / wavelength
a) Arrange the following electromagnetic radiations in the ascending order of frequency
Visible rays, Infra-red rays, X-rays, Microwaves
b) Give one application of infrared and X- rays each
Q.5 Score: 2 Year: 2015_March_SY
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(A) The electric field of a plane electromagnetic wave travelling in the positive Z-direction is given by
    a) Ex = E0 Sin (kz + ω t)
    b) Ex = E0 Sin (kz - ω t)
    c) Ex = E0 Sin (2kz )
    d) Ex = E0 Sin (kz)
(B) We feel excessive sweating on a cloudy day. Why?
Q.6 Score: 2 Year: 2016_March_SY
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Match the following:
(i) X-rays water purifier
(ii) Infrared Cancer treatment
(iii)Microwave Remote switch
(iv)Ultraviolet Radar
Q.7 Score: 2 Year: 2017_March_SY
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Choose the appropriate values for X-rays from the given table
Wave Length Frequency
1 mm 3 x 1017Hz
1 μm 3 x 108 Hz
1 nm 3 x 1021 Hz
Q.8 Score: 3 Year: 2018_March_SY
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Name the part of the electromagnetic spectrum:
  (i) used in radar systems
  (ii) produced by bombarding a metal target by a high speed electrons
(b) Electromagnctic waves are produced by ........................
(charges at rest / charges in uniform motion / charges in accelerated motion)
(c) Why only microwaves are used in microwave ovens ?
Q.9 Score: 2 Year: 2019_March_SY
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Which electromagnetic waves are used for the following purposes ?
(i) Diagnostic tool in medicine.
(ii) Kill germs in water purifiers.
(iii) Cellular phones
(iv) In remote switches of household electronic systems.
Q.10 Score: 3 Year: 2020_March_SY
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A typical plane electromagnetic wave propagating along the Z direction is shown in figure.
(a) Write the equation for electric and magnetic fields.
(b) Write the methods of production of radio waves and microwaves. Write any one use of these waves.